From 195dcbcca00a2c07ea18cf707261246d20c44c42 Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org.ua>
Date: Wed, 23 Feb 2005 15:13:35 +0000
Subject: [PATCH] Added to the repository by gnulib-sync

---
 lib/xstrtoul.c         |   6 ++++++
 m4/alloca.m4           |  42 ++++++++++++++++++++++++++++++++++++++++++
 m4/allocsa.m4          |  15 +++++++++++++++
 m4/argp.m4             |  17 +++++++++++++++++
 m4/eealloc.m4          |  32 ++++++++++++++++++++++++++++++++
 m4/eoverflow.m4        |  64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/error.m4            |  22 ++++++++++++++++++++++
 m4/exitfail.m4         |  11 +++++++++++
 m4/extensions.m4       |  26 ++++++++++++++++++++++++++
 m4/fnmatch.m4          | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/getline.m4          |  74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/getndelim2.m4       |  25 +++++++++++++++++++++++++
 m4/getpass.m4          |  37 +++++++++++++++++++++++++++++++++++++
 m4/gettext_gl.m4       | 487 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/glibc21_gl.m4       |  30 ++++++++++++++++++++++++++++++
 m4/iconv.m4            | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/intmax.m4           |  32 ++++++++++++++++++++++++++++++++
 m4/intmax_t.m4         |  61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/inttypes.m4         |  27 +++++++++++++++++++++++++++
 m4/inttypes_h_gl.m4    |  26 ++++++++++++++++++++++++++
 m4/lib-ld_gl.m4        | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/lib-prefix_gl.m4    | 153 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/longdouble.m4       |  30 ++++++++++++++++++++++++++++++
 m4/longlong_gl.m4      |  23 +++++++++++++++++++++++
 m4/mailbox-link.m4     | 549 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/mbstate_t.m4        |  30 ++++++++++++++++++++++++++++++
 m4/md5.m4              |  15 +++++++++++++++
 m4/mempcpy.m4          |  23 +++++++++++++++++++++++
 m4/nls.m4              |  49 +++++++++++++++++++++++++++++++++++++++++++++++++
 m4/obstack.m4          |  23 +++++++++++++++++++++++
 m4/onceonly.m4         |  86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/po_gl.m4            | 426 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/printf-posix.m4     |  46 ++++++++++++++++++++++++++++++++++++++++++++++
 m4/progtest.m4         |  91 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/restrict.m4         |  38 ++++++++++++++++++++++++++++++++++++++
 m4/setenv.m4           |  70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/signed.m4           |  19 +++++++++++++++++++
 m4/size_max.m4         |  61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/snprintf.m4         |  15 +++++++++++++++
 m4/ssize_t.m4          |  20 ++++++++++++++++++++
 m4/stdbool.m4          |  83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/stdint_h_gl.m4      |  26 ++++++++++++++++++++++++++
 m4/strcase.m4          |  37 +++++++++++++++++++++++++++++++++++++
 m4/strchrnul.m4        |  19 +++++++++++++++++++
 m4/strerror_r.m4       |  49 +++++++++++++++++++++++++++++++++++++++++++++++++
 m4/strndup.m4          |  21 +++++++++++++++++++++
 m4/strnlen.m4          |  25 +++++++++++++++++++++++++
 m4/strtok_r.m4         |  17 +++++++++++++++++
 m4/sysexits.m4         |  13 +++++++++++++
 m4/uint32_t.m4         |  53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/uintmax_t_gl.m4     |  30 ++++++++++++++++++++++++++++++
 m4/ulonglong_gl.m4     |  23 +++++++++++++++++++++++
 m4/vasnprintf.m4       |  58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 m4/vasprintf.m4        |  25 +++++++++++++++++++++++++
 m4/vsnprintf.m4        |  15 +++++++++++++++
 m4/wchar_t.m4          |  22 ++++++++++++++++++++++
 m4/wint_t.m4           |  22 ++++++++++++++++++++++
 m4/xalloc.m4           |  22 ++++++++++++++++++++++
 m4/xsize.m4            |  14 ++++++++++++++
 m4/xstrtol.m4          |  33 +++++++++++++++++++++++++++++++++
 mailbox/alloca.c       | 491 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/alloca_.h      |  52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/asnprintf.c    |  37 +++++++++++++++++++++++++++++++++++++
 mailbox/getndelim2.c   | 155 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/getndelim2.h   |  43 +++++++++++++++++++++++++++++++++++++++++++
 mailbox/getopt_.h      | 227 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/getopt_int.h   | 131 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/gettext.h      |  68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/mempcpy.c      |  29 +++++++++++++++++++++++++++++
 mailbox/mempcpy.h      |  36 ++++++++++++++++++++++++++++++++++++
 mailbox/minmax.h       |  53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/printf-args.c  | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/printf-args.h  | 136 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/printf-parse.c | 536 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/printf-parse.h |  74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/regex.h        | 556 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/strcase.h      |  47 +++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/strcasecmp.c   |  66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/strchrnul.h    |  28 ++++++++++++++++++++++++++++
 mailbox/strncasecmp.c  |   2 ++
 mailbox/strndup.h      |  30 ++++++++++++++++++++++++++++++
 mailbox/strtok_r.h     |  53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/sysexit_.h     |  39 +++++++++++++++++++++++++++++++++++++++
 mailbox/vasnprintf.c   | 896 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/vasnprintf.h   |  77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/vsnprintf.c    |  58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mailbox/vsnprintf.h    |  31 +++++++++++++++++++++++++++++++
 mailbox/xsize.h        | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 scripts/config.rpath   | 548 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 89 files changed, 8448 insertions(+), 0 deletions(-)
 create mode 100644 lib/xstrtoul.c
 create mode 100644 m4/alloca.m4
 create mode 100644 m4/allocsa.m4
 create mode 100644 m4/argp.m4
 create mode 100644 m4/eealloc.m4
 create mode 100644 m4/eoverflow.m4
 create mode 100644 m4/error.m4
 create mode 100644 m4/exitfail.m4
 create mode 100644 m4/extensions.m4
 create mode 100644 m4/fnmatch.m4
 create mode 100644 m4/getline.m4
 create mode 100644 m4/getndelim2.m4
 create mode 100644 m4/getpass.m4
 create mode 100644 m4/gettext_gl.m4
 create mode 100644 m4/glibc21_gl.m4
 create mode 100644 m4/iconv.m4
 create mode 100644 m4/intmax.m4
 create mode 100644 m4/intmax_t.m4
 create mode 100644 m4/inttypes.m4
 create mode 100644 m4/inttypes_h_gl.m4
 create mode 100644 m4/lib-ld_gl.m4
 create mode 100644 m4/lib-prefix_gl.m4
 create mode 100644 m4/longdouble.m4
 create mode 100644 m4/longlong_gl.m4
 create mode 100644 m4/mailbox-link.m4
 create mode 100644 m4/mbstate_t.m4
 create mode 100644 m4/md5.m4
 create mode 100644 m4/mempcpy.m4
 create mode 100644 m4/nls.m4
 create mode 100644 m4/obstack.m4
 create mode 100644 m4/onceonly.m4
 create mode 100644 m4/po_gl.m4
 create mode 100644 m4/printf-posix.m4
 create mode 100644 m4/progtest.m4
 create mode 100644 m4/restrict.m4
 create mode 100644 m4/setenv.m4
 create mode 100644 m4/signed.m4
 create mode 100644 m4/size_max.m4
 create mode 100644 m4/snprintf.m4
 create mode 100644 m4/ssize_t.m4
 create mode 100644 m4/stdbool.m4
 create mode 100644 m4/stdint_h_gl.m4
 create mode 100644 m4/strcase.m4
 create mode 100644 m4/strchrnul.m4
 create mode 100644 m4/strerror_r.m4
 create mode 100644 m4/strndup.m4
 create mode 100644 m4/strnlen.m4
 create mode 100644 m4/strtok_r.m4
 create mode 100644 m4/sysexits.m4
 create mode 100644 m4/uint32_t.m4
 create mode 100644 m4/uintmax_t_gl.m4
 create mode 100644 m4/ulonglong_gl.m4
 create mode 100644 m4/vasnprintf.m4
 create mode 100644 m4/vasprintf.m4
 create mode 100644 m4/vsnprintf.m4
 create mode 100644 m4/wchar_t.m4
 create mode 100644 m4/wint_t.m4
 create mode 100644 m4/xalloc.m4
 create mode 100644 m4/xsize.m4
 create mode 100644 m4/xstrtol.m4
 create mode 100644 mailbox/alloca.c
 create mode 100644 mailbox/alloca_.h
 create mode 100644 mailbox/asnprintf.c
 create mode 100644 mailbox/getndelim2.c
 create mode 100644 mailbox/getndelim2.h
 create mode 100644 mailbox/getopt_.h
 create mode 100644 mailbox/getopt_int.h
 create mode 100644 mailbox/gettext.h
 create mode 100644 mailbox/mempcpy.c
 create mode 100644 mailbox/mempcpy.h
 create mode 100644 mailbox/minmax.h
 create mode 100644 mailbox/printf-args.c
 create mode 100644 mailbox/printf-args.h
 create mode 100644 mailbox/printf-parse.c
 create mode 100644 mailbox/printf-parse.h
 create mode 100644 mailbox/regex.h
 create mode 100644 mailbox/strcase.h
 create mode 100644 mailbox/strcasecmp.c
 create mode 100644 mailbox/strchrnul.h
 create mode 100644 mailbox/strncasecmp.c
 create mode 100644 mailbox/strndup.h
 create mode 100644 mailbox/strtok_r.h
 create mode 100644 mailbox/sysexit_.h
 create mode 100644 mailbox/vasnprintf.c
 create mode 100644 mailbox/vasnprintf.h
 create mode 100644 mailbox/vsnprintf.c
 create mode 100644 mailbox/vsnprintf.h
 create mode 100644 mailbox/xsize.h
 create mode 100755 scripts/config.rpath

diff --git a/lib/xstrtoul.c b/lib/xstrtoul.c
new file mode 100644
index 0000000..285f7b9
--- /dev/null
+++ b/lib/xstrtoul.c
@@ -0,0 +1,6 @@
+#define __strtol strtoul
+#define __strtol_t unsigned long int
+#define __xstrtol xstrtoul
+#define STRTOL_T_MINIMUM 0
+#define STRTOL_T_MAXIMUM ULONG_MAX
+#include "xstrtol.c"
diff --git a/m4/alloca.m4 b/m4/alloca.m4
new file mode 100644
index 0000000..a9e3f45
--- /dev/null
+++ b/m4/alloca.m4
@@ -0,0 +1,42 @@
+# alloca.m4 serial 5
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_ALLOCA],
+[
+  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+  AC_REQUIRE([AC_PROG_CPP])
+  AC_REQUIRE([AC_PROG_EGREP])
+
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  if test $ac_cv_func_alloca_works = no; then
+    gl_PREREQ_ALLOCA
+  fi
+
+  # Define an additional variable used in the Makefile substitution.
+  if test $ac_cv_working_alloca_h = yes; then
+    AC_EGREP_CPP([Need own alloca], [
+#if defined __GNUC__ || defined _AIX || defined _MSC_VER
+	Need own alloca
+#endif
+      ],
+      [AC_DEFINE(HAVE_ALLOCA, 1,
+	    [Define to 1 if you have `alloca' after including <alloca.h>,
+	     a header that may be supplied by this distribution.])
+       ALLOCA_H=alloca.h],
+      [ALLOCA_H=])
+  else
+    ALLOCA_H=alloca.h
+  fi
+  AC_SUBST([ALLOCA_H])
+
+  AC_DEFINE(HAVE_ALLOCA_H, 1,
+    [Define HAVE_ALLOCA_H for backward compatibility with older code
+     that includes <alloca.h> only if HAVE_ALLOCA_H is defined.])
+])
+
+# Prerequisites of lib/alloca.c.
+# STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
+AC_DEFUN([gl_PREREQ_ALLOCA], [:])
diff --git a/m4/allocsa.m4 b/m4/allocsa.m4
new file mode 100644
index 0000000..474862f
--- /dev/null
+++ b/m4/allocsa.m4
@@ -0,0 +1,15 @@
+# allocsa.m4 serial 3
+dnl Copyright (C) 2003-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_ALLOCSA],
+[
+  dnl Use the autoconf tests for alloca(), but not the AC_SUBSTed variables
+  dnl @ALLOCA@ and @LTALLOCA@.
+  AC_REQUIRE([gl_FUNC_ALLOCA])
+  AC_REQUIRE([gl_EEMALLOC])
+  AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+  AC_REQUIRE([gt_TYPE_LONGDOUBLE])
+])
diff --git a/m4/argp.m4 b/m4/argp.m4
new file mode 100644
index 0000000..c14f809
--- /dev/null
+++ b/m4/argp.m4
@@ -0,0 +1,17 @@
+# argp.m4 serial 4
+dnl Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_ARGP],
+[
+  AC_REQUIRE([AC_C_INLINE])
+  dnl AC_REQUIRE([gl_FUNC_GLIBC_UNLOCKED_IO])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([gl_GETOPT_SUBSTITUTE])
+  AC_CHECK_DECLS([program_invocation_name, program_invocation_short_name],,,
+    [#include <errno.h>])
+  AC_CHECK_FUNCS_ONCE([flockfile funlockfile])
+  AC_CHECK_HEADERS_ONCE([features.h linewrap.h])
+])
diff --git a/m4/eealloc.m4 b/m4/eealloc.m4
new file mode 100644
index 0000000..adcfd06
--- /dev/null
+++ b/m4/eealloc.m4
@@ -0,0 +1,32 @@
+# eealloc.m4 serial 1
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EEALLOC],
+[
+  AC_REQUIRE([gl_EEMALLOC])
+  AC_REQUIRE([gl_EEREALLOC])
+  AC_REQUIRE([AC_C_INLINE])
+])
+
+AC_DEFUN([gl_EEMALLOC],
+[
+  _AC_FUNC_MALLOC_IF(
+    [gl_cv_func_malloc_0_nonnull=1],
+    [gl_cv_func_malloc_0_nonnull=0])
+  AC_DEFINE_UNQUOTED([MALLOC_0_IS_NONNULL], $gl_cv_func_malloc_0_nonnull,
+    [If malloc(0) is != NULL, define this to 1.  Otherwise define this
+     to 0.])
+])
+
+AC_DEFUN([gl_EEREALLOC],
+[
+  _AC_FUNC_REALLOC_IF(
+    [gl_cv_func_realloc_0_nonnull=1],
+    [gl_cv_func_realloc_0_nonnull=0])
+  AC_DEFINE_UNQUOTED([REALLOC_0_IS_NONNULL], $gl_cv_func_realloc_0_nonnull,
+    [If realloc(NULL,0) is != NULL, define this to 1.  Otherwise define this
+     to 0.])
+])
diff --git a/m4/eoverflow.m4 b/m4/eoverflow.m4
new file mode 100644
index 0000000..8c28ca3
--- /dev/null
+++ b/m4/eoverflow.m4
@@ -0,0 +1,64 @@
+# eoverflow.m4 serial 1
+dnl Copyright (C) 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+# The EOVERFLOW errno value ought to be defined in <errno.h>, according to
+# POSIX.  But some systems (like AIX 3) don't define it, and some systems
+# (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
+
+# Define EOVERFLOW as a C macro and as a substituted macro in such a way that
+# 1. on all systems, after inclusion of <errno.h>, EOVERFLOW is usable,
+# 2. on systems where EOVERFLOW is defined elsewhere, we use the same numeric
+#    value.
+
+AC_DEFUN([gl_EOVERFLOW],
+[
+  AC_REQUIRE([AC_PROG_CC])dnl
+
+  AC_CACHE_CHECK([for EOVERFLOW], ac_cv_decl_EOVERFLOW, [
+    AC_EGREP_CPP(yes,[
+#include <errno.h>
+#ifdef EOVERFLOW
+yes
+#endif
+      ], have_eoverflow=1)
+    if test -n "$have_eoverflow"; then
+      dnl EOVERFLOW exists in <errno.h>. Don't need to define EOVERFLOW ourselves.
+      ac_cv_decl_EOVERFLOW=yes
+    else
+      AC_EGREP_CPP(yes,[
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+#ifdef EOVERFLOW
+yes
+#endif
+        ], have_eoverflow=1)
+      if test -n "$have_eoverflow"; then
+        dnl EOVERFLOW exists but is hidden.
+        dnl Define it to the same value.
+        _AC_COMPUTE_INT([EOVERFLOW], ac_cv_decl_EOVERFLOW, [
+#define _XOPEN_SOURCE_EXTENDED 1
+#include <errno.h>
+/* The following two lines are a workaround against an autoconf-2.52 bug.  */
+#include <stdio.h>
+#include <stdlib.h>
+])
+      else
+        dnl EOVERFLOW isn't defined by the system. Define EOVERFLOW ourselves, but
+        dnl don't define it as EINVAL, because snprintf() callers want to
+        dnl distinguish EINVAL and EOVERFLOW.
+        ac_cv_decl_EOVERFLOW=E2BIG
+      fi
+    fi
+  ])
+  if test "$ac_cv_decl_EOVERFLOW" != yes; then
+    AC_DEFINE_UNQUOTED([EOVERFLOW], [$ac_cv_decl_EOVERFLOW],
+                       [Define as good substitute value for EOVERFLOW.])
+    EOVERFLOW="$ac_cv_decl_EOVERFLOW"
+    AC_SUBST(EOVERFLOW)
+  fi
+])
diff --git a/m4/error.m4 b/m4/error.m4
new file mode 100644
index 0000000..7c7746e
--- /dev/null
+++ b/m4/error.m4
@@ -0,0 +1,22 @@
+#serial 11
+
+# Copyright (C) 1996, 1997, 1998, 2001, 2002, 2003, 2004 Free Software
+# Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_ERROR],
+[
+  AC_FUNC_ERROR_AT_LINE
+  dnl Note: AC_FUNC_ERROR_AT_LINE does AC_LIBSOURCES([error.h, error.c]).
+  gl_PREREQ_ERROR
+])
+
+# Prerequisites of lib/error.c.
+AC_DEFUN([gl_PREREQ_ERROR],
+[
+  AC_REQUIRE([AC_FUNC_STRERROR_R])
+  :
+])
diff --git a/m4/exitfail.m4 b/m4/exitfail.m4
new file mode 100644
index 0000000..f25c64d
--- /dev/null
+++ b/m4/exitfail.m4
@@ -0,0 +1,11 @@
+# exitfail.m4 serial 4
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EXITFAIL],
+[
+  dnl No prerequisites of lib/exitfail.c.
+  :
+])
diff --git a/m4/extensions.m4 b/m4/extensions.m4
new file mode 100644
index 0000000..6f34a8d
--- /dev/null
+++ b/m4/extensions.m4
@@ -0,0 +1,26 @@
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# gl_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+AC_DEFUN([gl_USE_SYSTEM_EXTENSIONS], [
+  AC_BEFORE([$0], [AC_COMPILE_IFELSE])
+  AC_BEFORE([$0], [AC_RUN_IFELSE])
+
+  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_AIX])
+  AC_REQUIRE([AC_MINIX])
+
+  AH_VERBATIM([__EXTENSIONS__],
+[/* Enable extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif])
+  AC_DEFINE([__EXTENSIONS__])
+])
diff --git a/m4/fnmatch.m4 b/m4/fnmatch.m4
new file mode 100644
index 0000000..bca15ad
--- /dev/null
+++ b/m4/fnmatch.m4
@@ -0,0 +1,102 @@
+# Check for fnmatch.
+
+# This is a modified version of autoconf's AC_FUNC_FNMATCH.
+# This file should be simplified after Autoconf 2.57 is required.
+
+# Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AC_FUNC_FNMATCH_IF(STANDARD = GNU | POSIX, CACHE_VAR, IF-TRUE, IF-FALSE)
+# -------------------------------------------------------------------------
+# If a STANDARD compliant fnmatch is found, run IF-TRUE, otherwise
+# IF-FALSE.  Use CACHE_VAR.
+AC_DEFUN([_AC_FUNC_FNMATCH_IF],
+[AC_CACHE_CHECK(
+   [for working $1 fnmatch],
+   [$2],
+  [dnl Some versions of Solaris, SCO, and the GNU C Library
+   dnl have a broken or incompatible fnmatch.
+   dnl So we run a test program.  If we are cross-compiling, take no chance.
+   dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this test.
+   AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM(
+	 [
+#	   include <stdlib.h>
+#	   include <fnmatch.h>
+#	   define y(a, b, c) (fnmatch (a, b, c) == 0)
+#	   define n(a, b, c) (fnmatch (a, b, c) == FNM_NOMATCH)
+         ],
+	 [exit
+	   (!(y ("a*", "abc", 0)
+	      && n ("d*/*1", "d/s/1", FNM_PATHNAME)
+	      && y ("a\\\\bc", "abc", 0)
+	      && n ("a\\\\bc", "abc", FNM_NOESCAPE)
+	      && y ("*x", ".x", 0)
+	      && n ("*x", ".x", FNM_PERIOD)
+	      && m4_if([$1], [GNU],
+		   [y ("xxXX", "xXxX", FNM_CASEFOLD)
+		    && y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
+		    && n ("d*/*1", "d/s/1", FNM_FILE_NAME)
+		    && y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
+		    && y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
+		    && y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)],
+		   1)));])],
+      [$2=yes],
+      [$2=no],
+      [$2=cross])])
+AS_IF([test $$2 = yes], [$3], [$4])
+])# _AC_FUNC_FNMATCH_IF
+
+
+# _AC_LIBOBJ_FNMATCH
+# ------------------
+# Prepare the replacement of fnmatch.
+AC_DEFUN([_AC_LIBOBJ_FNMATCH],
+[AC_REQUIRE([AC_C_CONST])dnl
+AC_REQUIRE([AC_FUNC_ALLOCA])dnl
+AC_REQUIRE([AC_TYPE_MBSTATE_T])dnl
+AC_CHECK_DECLS([getenv])
+AC_CHECK_FUNCS([btowc mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
+AC_CHECK_HEADERS([wchar.h wctype.h])
+AC_LIBOBJ([fnmatch])
+FNMATCH_H=fnmatch.h
+])# _AC_LIBOBJ_FNMATCH
+
+
+AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
+[
+  FNMATCH_H=
+  _AC_FUNC_FNMATCH_IF([POSIX], [ac_cv_func_fnmatch_posix],
+                      [rm -f lib/fnmatch.h],
+                      [_AC_LIBOBJ_FNMATCH])
+  if test $ac_cv_func_fnmatch_posix != yes; then
+    dnl We must choose a different name for our function, since on ELF systems
+    dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
+    dnl compiled into a shared library.
+    AC_DEFINE([fnmatch], [posix_fnmatch],
+      [Define to a replacement function name for fnmatch().])
+  fi
+  AC_SUBST([FNMATCH_H])
+])
+
+
+AC_DEFUN([gl_FUNC_FNMATCH_GNU],
+[
+  dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  FNMATCH_H=
+  _AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
+                      [rm -f lib/fnmatch.h],
+                      [_AC_LIBOBJ_FNMATCH])
+  if test $ac_cv_func_fnmatch_gnu != yes; then
+    dnl We must choose a different name for our function, since on ELF systems
+    dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
+    dnl compiled into a shared library.
+    AC_DEFINE([fnmatch], [gnu_fnmatch],
+      [Define to a replacement function name for fnmatch().])
+  fi
+  AC_SUBST([FNMATCH_H])
+])
diff --git a/m4/getline.m4 b/m4/getline.m4
new file mode 100644
index 0000000..28dd0d2
--- /dev/null
+++ b/m4/getline.m4
@@ -0,0 +1,74 @@
+# getline.m4 serial 11
+
+dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software
+dnl Foundation, Inc.
+dnl
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ(2.52)
+
+dnl See if there's a working, system-supplied version of the getline function.
+dnl We can't just do MU_REPLACE_FUNCS(getline) because some systems
+dnl have a function by that name in -linet that doesn't have anything
+dnl to do with the function we need.
+AC_DEFUN([AM_FUNC_GETLINE],
+[
+  dnl Persuade glibc <stdio.h> to declare getline() and getdelim().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  am_getline_needs_run_time_check=no
+  AC_CHECK_FUNC(getline,
+		dnl Found it in some library.  Verify that it works.
+		am_getline_needs_run_time_check=yes,
+		am_cv_func_working_getline=no)
+  if test $am_getline_needs_run_time_check = yes; then
+    AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
+    [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
+    AC_TRY_RUN([
+#    include <stdio.h>
+#    include <stdlib.h>
+#    include <string.h>
+    int main ()
+    { /* Based on a test program from Karl Heuer.  */
+      char *line = NULL;
+      size_t siz = 0;
+      int len;
+      FILE *in = fopen ("./conftest.data", "r");
+      if (!in)
+	return 1;
+      len = getline (&line, &siz, in);
+      exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
+    }
+    ], am_cv_func_working_getline=yes dnl The library version works.
+    , am_cv_func_working_getline=no dnl The library version does NOT work.
+    , am_cv_func_working_getline=no dnl We're cross compiling.
+    )])
+  fi
+
+  if test $am_cv_func_working_getline = no; then
+    dnl We must choose a different name for our function, since on ELF systems
+    dnl a broken getline() in libc.so would override our getline() in
+    dnl libgettextlib.so.
+    AC_DEFINE([getline], [gnu_getline],
+      [Define to a replacement function name for getline().])
+    MU_LIBOBJ(getline)
+
+    # Avoid multiple inclusions of getndelim2.o into LIBOBJS.
+    # This hack won't be needed after gnulib requires Autoconf 2.58 or later.
+    case " $LIB@&t@OBJS " in
+    *" getndelim2.$ac_objext "* ) ;;
+    *) MU_LIBOBJ(getndelim2);;
+    esac
+
+    gl_PREREQ_GETLINE
+    gl_PREREQ_GETNDELIM2
+  fi
+])
+
+# Prerequisites of lib/getline.c.
+AC_DEFUN([gl_PREREQ_GETLINE],
+[
+  AC_CHECK_FUNCS(getdelim)
+])
diff --git a/m4/getndelim2.m4 b/m4/getndelim2.m4
new file mode 100644
index 0000000..b0238eb
--- /dev/null
+++ b/m4/getndelim2.m4
@@ -0,0 +1,25 @@
+# getndelim2.m4 serial 4
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_GETNDELIM2],
+[
+  # Avoid multiple inclusions of getndelim2.o into LIBOBJS.
+  # This hack won't be needed after gnulib requires Autoconf 2.58 or later.
+  case " $LIB@&t@OBJS " in
+  *" getndelim2.$ac_objext "* ) ;;
+  *) MU_LIBOBJ(getndelim2);;
+  esac
+
+  gl_PREREQ_GETNDELIM2
+])
+
+# Prerequisites of lib/getndelim2.h and lib/getndelim2.c.
+AC_DEFUN([gl_PREREQ_GETNDELIM2],
+[
+  dnl Prerequisites of lib/getndelim2.h.
+  AC_REQUIRE([gt_TYPE_SSIZE_T])
+  dnl No prerequisites of lib/getndelim2.c.
+])
diff --git a/m4/getpass.m4 b/m4/getpass.m4
new file mode 100644
index 0000000..d48534c
--- /dev/null
+++ b/m4/getpass.m4
@@ -0,0 +1,37 @@
+# getpass.m4 serial 5
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Provide a getpass() function if the system doesn't have it.
+AC_DEFUN([gl_FUNC_GETPASS],
+[
+  AC_REPLACE_FUNCS(getpass)
+  AC_CHECK_DECLS_ONCE(getpass)
+  if test $ac_cv_func_getpass = no; then
+    gl_PREREQ_GETPASS
+  fi
+])
+
+# Provide the GNU getpass() implementation. It supports passwords of
+# arbitrary length (not just 8 bytes as on HP-UX).
+AC_DEFUN([gl_FUNC_GETPASS_GNU],
+[
+  AC_CHECK_DECLS_ONCE(getpass)
+  dnl TODO: Detect when GNU getpass() is already found in glibc.
+  AC_LIBOBJ(getpass)
+  gl_PREREQ_GETPASS
+  dnl We must choose a different name for our function, since on ELF systems
+  dnl an unusable getpass() in libc.so would override our getpass() if it is
+  dnl compiled into a shared library.
+  AC_DEFINE([getpass], [gnu_getpass],
+    [Define to a replacement function name for getpass().])
+])
+
+# Prerequisites of lib/getpass.c.
+AC_DEFUN([gl_PREREQ_GETPASS], [
+  AC_CHECK_HEADERS_ONCE(stdio_ext.h)
+  AC_CHECK_DECLS_ONCE([fflush_unlocked flockfile fputs_unlocked funlockfile putc_unlocked])
+  :
+])
diff --git a/m4/gettext_gl.m4 b/m4/gettext_gl.m4
new file mode 100644
index 0000000..a9225d3
--- /dev/null
+++ b/m4/gettext_gl.m4
@@ -0,0 +1,487 @@
+# gettext.m4 serial 29
+dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+dnl Macro to add for using GNU gettext.
+
+dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
+dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
+dnl    default (if it is not specified or empty) is 'no-libtool'.
+dnl    INTLSYMBOL should be 'external' for packages with no intl directory,
+dnl    and 'no-libtool' or 'use-libtool' for packages with an intl directory.
+dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
+dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
+dnl    depending on --{enable,disable}-{shared,static} and on the presence of
+dnl    AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
+dnl    $(top_builddir)/intl/libintl.a will be created.
+dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
+dnl    implementations (in libc or libintl) without the ngettext() function
+dnl    will be ignored.  If NEEDSYMBOL is specified and is
+dnl    'need-formatstring-macros', then GNU gettext implementations that don't
+dnl    support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
+dnl INTLDIR is used to find the intl libraries.  If empty,
+dnl    the value `$(top_builddir)/intl/' is used.
+dnl
+dnl The result of the configuration is one of three cases:
+dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
+dnl    and used.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 2) GNU gettext has been found in the system's C library.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 3) No internationalization, always use English msgid.
+dnl    Catalog format: none
+dnl    Catalog extension: none
+dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
+dnl The use of .gmo is historical (it was needed to avoid overwriting the
+dnl GNU format catalogs when building on a platform with an X/Open gettext),
+dnl but we keep it in order not to force irrelevant filename changes on the
+dnl maintainers.
+dnl
+AC_DEFUN([AM_GNU_GETTEXT],
+[
+  dnl Argument checking.
+  ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
+    [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
+])])])])])
+  ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
+    [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
+])])])])
+  define(gt_included_intl, ifelse([$1], [external], [no], [yes]))
+  define(gt_libtool_suffix_prefix, ifelse([$1], [use-libtool], [l], []))
+
+  AC_REQUIRE([AM_PO_SUBDIRS])dnl
+  ifelse(gt_included_intl, yes, [
+    AC_REQUIRE([AM_INTL_SUBDIR])dnl
+  ])
+
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Sometimes libintl requires libiconv, so first search for libiconv.
+  dnl Ideally we would do this search only after the
+  dnl      if test "$USE_NLS" = "yes"; then
+  dnl        if test "$gt_cv_func_gnugettext_libc" != "yes"; then
+  dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
+  dnl the configure script would need to contain the same shell code
+  dnl again, outside any 'if'. There are two solutions:
+  dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
+  dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
+  dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
+  dnl documented, we avoid it.
+  ifelse(gt_included_intl, yes, , [
+    AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+  ])
+
+  dnl Set USE_NLS.
+  AM_NLS
+
+  ifelse(gt_included_intl, yes, [
+    BUILD_INCLUDED_LIBINTL=no
+    USE_INCLUDED_LIBINTL=no
+  ])
+  LIBINTL=
+  LTLIBINTL=
+  POSUB=
+
+  dnl If we use NLS figure out what method
+  if test "$USE_NLS" = "yes"; then
+    gt_use_preinstalled_gnugettext=no
+    ifelse(gt_included_intl, yes, [
+      AC_MSG_CHECKING([whether included gettext is requested])
+      AC_ARG_WITH(included-gettext,
+        [  --with-included-gettext use the GNU gettext library included here],
+        nls_cv_force_use_gnu_gettext=$withval,
+        nls_cv_force_use_gnu_gettext=no)
+      AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
+
+      nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
+      if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
+    ])
+        dnl User does not insist on using GNU NLS library.  Figure out what
+        dnl to use.  If GNU gettext is available we use this.  Else we have
+        dnl to fall back to GNU NLS library.
+
+        dnl Add a version number to the cache macros.
+        define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
+        define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
+        define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
+
+        AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
+         [AC_TRY_LINK([#include <libintl.h>
+]ifelse([$2], [need-formatstring-macros],
+[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+], [])[extern int _nl_msg_cat_cntr;
+extern int *_nl_domain_bindings;],
+            [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings],
+            gt_cv_func_gnugettext_libc=yes,
+            gt_cv_func_gnugettext_libc=no)])
+
+        if test "$gt_cv_func_gnugettext_libc" != "yes"; then
+          dnl Sometimes libintl requires libiconv, so first search for libiconv.
+          ifelse(gt_included_intl, yes, , [
+            AM_ICONV_LINK
+          ])
+          dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
+          dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
+          dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
+          dnl even if libiconv doesn't exist.
+          AC_LIB_LINKFLAGS_BODY([intl])
+          AC_CACHE_CHECK([for GNU gettext in libintl],
+            gt_cv_func_gnugettext_libintl,
+           [gt_save_CPPFLAGS="$CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $INCINTL"
+            gt_save_LIBS="$LIBS"
+            LIBS="$LIBS $LIBINTL"
+            dnl Now see whether libintl exists and does not depend on libiconv.
+            AC_TRY_LINK([#include <libintl.h>
+]ifelse([$2], [need-formatstring-macros],
+[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+], [])[extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias ();],
+              [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)],
+              gt_cv_func_gnugettext_libintl=yes,
+              gt_cv_func_gnugettext_libintl=no)
+            dnl Now see whether libintl exists and depends on libiconv.
+            if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
+              LIBS="$LIBS $LIBICONV"
+              AC_TRY_LINK([#include <libintl.h>
+]ifelse([$2], [need-formatstring-macros],
+[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+], [])[extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias ();],
+                [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)],
+               [LIBINTL="$LIBINTL $LIBICONV"
+                LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                gt_cv_func_gnugettext_libintl=yes
+               ])
+            fi
+            CPPFLAGS="$gt_save_CPPFLAGS"
+            LIBS="$gt_save_LIBS"])
+        fi
+
+        dnl If an already present or preinstalled GNU gettext() is found,
+        dnl use it.  But if this macro is used in GNU gettext, and GNU
+        dnl gettext is already preinstalled in libintl, we update this
+        dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
+        if test "$gt_cv_func_gnugettext_libc" = "yes" \
+           || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
+                && test "$PACKAGE" != gettext-runtime \
+                && test "$PACKAGE" != gettext-tools; }; then
+          gt_use_preinstalled_gnugettext=yes
+        else
+          dnl Reset the values set by searching for libintl.
+          LIBINTL=
+          LTLIBINTL=
+          INCINTL=
+        fi
+
+    ifelse(gt_included_intl, yes, [
+        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
+          dnl GNU gettext is not found in the C library.
+          dnl Fall back on included GNU gettext library.
+          nls_cv_use_gnu_gettext=yes
+        fi
+      fi
+
+      if test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions used to generate GNU NLS library.
+        BUILD_INCLUDED_LIBINTL=yes
+        USE_INCLUDED_LIBINTL=yes
+        LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV"
+        LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV"
+        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+      fi
+
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions to use GNU gettext tools.
+        CATOBJEXT=.gmo
+      fi
+    ])
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes" \
+       || test "$nls_cv_use_gnu_gettext" = "yes"; then
+      AC_DEFINE(ENABLE_NLS, 1,
+        [Define to 1 if translation of program messages to the user's native language
+   is requested.])
+    else
+      USE_NLS=no
+    fi
+  fi
+
+  AC_MSG_CHECKING([whether to use NLS])
+  AC_MSG_RESULT([$USE_NLS])
+  if test "$USE_NLS" = "yes"; then
+    AC_MSG_CHECKING([where the gettext function comes from])
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
+        gt_source="external libintl"
+      else
+        gt_source="libc"
+      fi
+    else
+      gt_source="included intl directory"
+    fi
+    AC_MSG_RESULT([$gt_source])
+  fi
+
+  if test "$USE_NLS" = "yes"; then
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
+        AC_MSG_CHECKING([how to link with libintl])
+        AC_MSG_RESULT([$LIBINTL])
+        AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
+      fi
+
+      dnl For backward compatibility. Some packages may be using this.
+      AC_DEFINE(HAVE_GETTEXT, 1,
+       [Define if the GNU gettext() function is already present or preinstalled.])
+      AC_DEFINE(HAVE_DCGETTEXT, 1,
+       [Define if the GNU dcgettext() function is already present or preinstalled.])
+    fi
+
+    dnl We need to process the po/ directory.
+    POSUB=po
+  fi
+
+  ifelse(gt_included_intl, yes, [
+    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
+    dnl to 'yes' because some of the testsuite requires it.
+    if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
+      BUILD_INCLUDED_LIBINTL=yes
+    fi
+
+    dnl Make all variables we use known to autoconf.
+    AC_SUBST(BUILD_INCLUDED_LIBINTL)
+    AC_SUBST(USE_INCLUDED_LIBINTL)
+    AC_SUBST(CATOBJEXT)
+
+    dnl For backward compatibility. Some configure.ins may be using this.
+    nls_cv_header_intl=
+    nls_cv_header_libgt=
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    DATADIRNAME=share
+    AC_SUBST(DATADIRNAME)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INSTOBJEXT=.mo
+    AC_SUBST(INSTOBJEXT)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    GENCAT=gencat
+    AC_SUBST(GENCAT)
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    if test "$USE_INCLUDED_LIBINTL" = yes; then
+      INTLOBJS="\$(GETTOBJS)"
+    fi
+    AC_SUBST(INTLOBJS)
+
+    dnl Enable libtool support if the surrounding package wishes it.
+    INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
+    AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
+  ])
+
+  dnl For backward compatibility. Some Makefiles may be using this.
+  INTLLIBS="$LIBINTL"
+  AC_SUBST(INTLLIBS)
+
+  dnl Make all documented variables known to autoconf.
+  AC_SUBST(LIBINTL)
+  AC_SUBST(LTLIBINTL)
+  AC_SUBST(POSUB)
+])
+
+
+dnl Checks for all prerequisites of the intl subdirectory,
+dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
+dnl            USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
+AC_DEFUN([AM_INTL_SUBDIR],
+[
+  AC_REQUIRE([AC_PROG_INSTALL])dnl
+  AC_REQUIRE([AM_MKINSTALLDIRS])dnl
+  AC_REQUIRE([AC_PROG_CC])dnl
+  AC_REQUIRE([AC_CANONICAL_HOST])dnl
+  AC_REQUIRE([AC_PROG_RANLIB])dnl
+  AC_REQUIRE([AC_ISC_POSIX])dnl
+  AC_REQUIRE([AC_HEADER_STDC])dnl
+  AC_REQUIRE([AC_C_CONST])dnl
+  AC_REQUIRE([bh_C_SIGNED])dnl
+  AC_REQUIRE([AC_C_INLINE])dnl
+  AC_REQUIRE([AC_TYPE_OFF_T])dnl
+  AC_REQUIRE([AC_TYPE_SIZE_T])dnl
+  AC_REQUIRE([gl_AC_TYPE_LONG_LONG])dnl
+  AC_REQUIRE([gt_TYPE_LONGDOUBLE])dnl
+  AC_REQUIRE([gt_TYPE_WCHAR_T])dnl
+  AC_REQUIRE([gt_TYPE_WINT_T])dnl
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  AC_REQUIRE([gt_TYPE_INTMAX_T])
+  AC_REQUIRE([gt_PRINTF_POSIX])
+  AC_REQUIRE([AC_FUNC_ALLOCA])dnl
+  AC_REQUIRE([AC_FUNC_MMAP])dnl
+  AC_REQUIRE([gl_GLIBC21])dnl
+  AC_REQUIRE([gt_INTDIV0])dnl
+  AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])dnl
+  AC_REQUIRE([gt_HEADER_INTTYPES_H])dnl
+  AC_REQUIRE([gt_INTTYPES_PRI])dnl
+  AC_REQUIRE([gl_XSIZE])dnl
+
+  AC_CHECK_TYPE([ptrdiff_t], ,
+    [AC_DEFINE([ptrdiff_t], [long],
+       [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
+    ])
+  AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
+stdlib.h string.h unistd.h sys/param.h])
+  AC_CHECK_FUNCS([asprintf fwprintf getcwd getegid geteuid getgid getuid \
+mempcpy munmap putenv setenv setlocale snprintf stpcpy strcasecmp strdup \
+strtoul tsearch wcslen __argz_count __argz_stringify __argz_next \
+__fsetlocking])
+
+  dnl Use the _snprintf function only if it is declared (because on NetBSD it
+  dnl is defined as a weak alias of snprintf; we prefer to use the latter).
+  gt_CHECK_DECL(_snprintf, [#include <stdio.h>])
+  gt_CHECK_DECL(_snwprintf, [#include <stdio.h>])
+
+  dnl Use the *_unlocked functions only if they are declared.
+  dnl (because some of them were defined without being declared in Solaris
+  dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built
+  dnl on Solaris 2.5.1 to run on Solaris 2.6).
+  dnl Don't use AC_CHECK_DECLS because it isn't supported in autoconf-2.13.
+  gt_CHECK_DECL(feof_unlocked, [#include <stdio.h>])
+  gt_CHECK_DECL(fgets_unlocked, [#include <stdio.h>])
+  gt_CHECK_DECL(getc_unlocked, [#include <stdio.h>])
+
+  case $gt_cv_func_printf_posix in
+    *yes) HAVE_POSIX_PRINTF=1 ;;
+    *) HAVE_POSIX_PRINTF=0 ;;
+  esac
+  AC_SUBST([HAVE_POSIX_PRINTF])
+  if test "$ac_cv_func_asprintf" = yes; then
+    HAVE_ASPRINTF=1
+  else
+    HAVE_ASPRINTF=0
+  fi
+  AC_SUBST([HAVE_ASPRINTF])
+  if test "$ac_cv_func_snprintf" = yes; then
+    HAVE_SNPRINTF=1
+  else
+    HAVE_SNPRINTF=0
+  fi
+  AC_SUBST([HAVE_SNPRINTF])
+  if test "$ac_cv_func_wprintf" = yes; then
+    HAVE_WPRINTF=1
+  else
+    HAVE_WPRINTF=0
+  fi
+  AC_SUBST([HAVE_WPRINTF])
+
+  AM_ICONV
+  AM_LANGINFO_CODESET
+  if test $ac_cv_header_locale_h = yes; then
+    AM_LC_MESSAGES
+  fi
+
+  dnl intl/plural.c is generated from intl/plural.y. It requires bison,
+  dnl because plural.y uses bison specific features. It requires at least
+  dnl bison-1.26 because earlier versions generate a plural.c that doesn't
+  dnl compile.
+  dnl bison is only needed for the maintainer (who touches plural.y). But in
+  dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
+  dnl the rule in general Makefile. Now, some people carelessly touch the
+  dnl files or have a broken "make" program, hence the plural.c rule will
+  dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
+  dnl present or too old.
+  AC_CHECK_PROGS([INTLBISON], [bison])
+  if test -z "$INTLBISON"; then
+    ac_verc_fail=yes
+  else
+    dnl Found it, now check the version.
+    AC_MSG_CHECKING([version of bison])
+changequote(<<,>>)dnl
+    ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
+    case $ac_prog_version in
+      '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+      1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
+changequote([,])dnl
+         ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+      *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+    esac
+    AC_MSG_RESULT([$ac_prog_version])
+  fi
+  if test $ac_verc_fail = yes; then
+    INTLBISON=:
+  fi
+])
+
+
+dnl gt_CHECK_DECL(FUNC, INCLUDES)
+dnl Check whether a function is declared.
+AC_DEFUN([gt_CHECK_DECL],
+[
+  AC_CACHE_CHECK([whether $1 is declared], ac_cv_have_decl_$1,
+    [AC_TRY_COMPILE([$2], [
+#ifndef $1
+  char *p = (char *) $1;
+#endif
+], ac_cv_have_decl_$1=yes, ac_cv_have_decl_$1=no)])
+  if test $ac_cv_have_decl_$1 = yes; then
+    gt_value=1
+  else
+    gt_value=0
+  fi
+  AC_DEFINE_UNQUOTED([HAVE_DECL_]translit($1, [a-z], [A-Z]), [$gt_value],
+    [Define to 1 if you have the declaration of `$1', and to 0 if you don't.])
+])
+
+
+dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
+AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
diff --git a/m4/glibc21_gl.m4 b/m4/glibc21_gl.m4
new file mode 100644
index 0000000..d95fd98
--- /dev/null
+++ b/m4/glibc21_gl.m4
@@ -0,0 +1,30 @@
+# glibc21.m4 serial 3
+dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Test for the GNU C Library, version 2.1 or newer.
+# From Bruno Haible.
+
+AC_DEFUN([gl_GLIBC21],
+  [
+    AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
+      ac_cv_gnu_library_2_1,
+      [AC_EGREP_CPP([Lucky GNU user],
+	[
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+  Lucky GNU user
+ #endif
+#endif
+	],
+	ac_cv_gnu_library_2_1=yes,
+	ac_cv_gnu_library_2_1=no)
+      ]
+    )
+    AC_SUBST(GLIBC21)
+    GLIBC21="$ac_cv_gnu_library_2_1"
+  ]
+)
diff --git a/m4/iconv.m4 b/m4/iconv.m4
new file mode 100644
index 0000000..c5f3579
--- /dev/null
+++ b/m4/iconv.m4
@@ -0,0 +1,103 @@
+# iconv.m4 serial AM4 (gettext-0.11.3)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
+[
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([iconv])
+])
+
+AC_DEFUN([AM_ICONV_LINK],
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable GNU libiconv installed).
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+
+  dnl Add $INCICONV to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed libiconv and not disabled its use
+  dnl via --without-libiconv-prefix, he wants to use it. The first
+  dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed.
+  am_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
+
+  AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+      [iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);],
+      am_cv_func_iconv=yes)
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+        [iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);],
+        am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes)
+      LIBS="$am_save_LIBS"
+    fi
+  ])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    AC_MSG_CHECKING([how to link with libiconv])
+    AC_MSG_RESULT([$LIBICONV])
+  else
+    dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
+    dnl either.
+    CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+  AC_SUBST(LIBICONV)
+  AC_SUBST(LTLIBICONV)
+])
+
+AC_DEFUN([AM_ICONV],
+[
+  AM_ICONV_LINK
+  if test "$am_cv_func_iconv" = yes; then
+    AC_MSG_CHECKING([for iconv declaration])
+    AC_CACHE_VAL(am_cv_proto_iconv, [
+      AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    AC_MSG_RESULT([$]{ac_t:-
+         }[$]am_cv_proto_iconv)
+    AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
+      [Define as const if the declaration of iconv() needs const.])
+  fi
+])
diff --git a/m4/intmax.m4 b/m4/intmax.m4
new file mode 100644
index 0000000..dfb08cc
--- /dev/null
+++ b/m4/intmax.m4
@@ -0,0 +1,32 @@
+# intmax.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+dnl Test whether the system has the 'intmax_t' type, but don't attempt to
+dnl find a replacement if it is lacking.
+
+AC_DEFUN([gt_TYPE_INTMAX_T],
+[
+  AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([jm_AC_HEADER_STDINT_H])
+  AC_CACHE_CHECK(for intmax_t, gt_cv_c_intmax_t,
+    [AC_TRY_COMPILE([
+#include <stddef.h> 
+#include <stdlib.h>
+#if HAVE_STDINT_H_WITH_UINTMAX
+#include <stdint.h>
+#endif
+#if HAVE_INTTYPES_H_WITH_UINTMAX
+#include <inttypes.h>
+#endif
+], [intmax_t x = -1;], gt_cv_c_intmax_t=yes, gt_cv_c_intmax_t=no)])
+  if test $gt_cv_c_intmax_t = yes; then
+    AC_DEFINE(HAVE_INTMAX_T, 1,
+      [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
+  fi
+])
diff --git a/m4/intmax_t.m4 b/m4/intmax_t.m4
new file mode 100644
index 0000000..44b1652
--- /dev/null
+++ b/m4/intmax_t.m4
@@ -0,0 +1,61 @@
+# intmax_t.m4 serial 4
+dnl Copyright (C) 1997-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+AC_PREREQ(2.13)
+
+# Define intmax_t to 'long' or 'long long'
+# if it is not already defined in <stdint.h> or <inttypes.h>.
+
+AC_DEFUN([gl_AC_TYPE_INTMAX_T],
+[
+  dnl For simplicity, we assume that a header file defines 'intmax_t' if and
+  dnl only if it defines 'uintmax_t'.
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
+    AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+    test $ac_cv_type_long_long = yes \
+      && ac_type='long long' \
+      || ac_type='long'
+    AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
+     [Define to long or long long if <inttypes.h> and <stdint.h> don't define.])
+  else
+    AC_DEFINE(HAVE_INTMAX_T, 1,
+      [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
+  fi
+])
+
+dnl An alternative would be to explicitly test for 'intmax_t'.
+
+AC_DEFUN([gt_AC_TYPE_INTMAX_T],
+[
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  AC_CACHE_CHECK(for intmax_t, gt_cv_c_intmax_t,
+    [AC_TRY_COMPILE([
+#include <stddef.h>
+#include <stdlib.h>
+#if HAVE_STDINT_H_WITH_UINTMAX
+#include <stdint.h>
+#endif
+#if HAVE_INTTYPES_H_WITH_UINTMAX
+#include <inttypes.h>
+#endif
+], [intmax_t x = -1;], gt_cv_c_intmax_t=yes, gt_cv_c_intmax_t=no)])
+  if test $gt_cv_c_intmax_t = yes; then
+    AC_DEFINE(HAVE_INTMAX_T, 1,
+      [Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>.])
+  else
+    AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+    test $ac_cv_type_long_long = yes \
+      && ac_type='long long' \
+      || ac_type='long'
+    AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
+     [Define to long or long long if <stdint.h> and <inttypes.h> don't define.])
+  fi
+])
diff --git a/m4/inttypes.m4 b/m4/inttypes.m4
new file mode 100644
index 0000000..ab370ff
--- /dev/null
+++ b/m4/inttypes.m4
@@ -0,0 +1,27 @@
+# inttypes.m4 serial 1 (gettext-0.11.4)
+dnl Copyright (C) 1997-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+# Define HAVE_INTTYPES_H if <inttypes.h> exists and doesn't clash with
+# <sys/types.h>.
+
+AC_DEFUN([gt_HEADER_INTTYPES_H],
+[
+  AC_CACHE_CHECK([for inttypes.h], gt_cv_header_inttypes_h,
+  [
+    AC_TRY_COMPILE(
+      [#include <sys/types.h>
+#include <inttypes.h>],
+      [], gt_cv_header_inttypes_h=yes, gt_cv_header_inttypes_h=no)
+  ])
+  if test $gt_cv_header_inttypes_h = yes; then
+    AC_DEFINE_UNQUOTED(HAVE_INTTYPES_H, 1,
+      [Define if <inttypes.h> exists and doesn't clash with <sys/types.h>.])
+  fi
+])
diff --git a/m4/inttypes_h_gl.m4 b/m4/inttypes_h_gl.m4
new file mode 100644
index 0000000..a5d075d
--- /dev/null
+++ b/m4/inttypes_h_gl.m4
@@ -0,0 +1,26 @@
+# inttypes_h.m4 serial 6
+dnl Copyright (C) 1997-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists,
+# doesn't clash with <sys/types.h>, and declares uintmax_t.
+
+AC_DEFUN([gl_AC_HEADER_INTTYPES_H],
+[
+  AC_CACHE_CHECK([for inttypes.h], gl_cv_header_inttypes_h,
+  [AC_TRY_COMPILE(
+    [#include <sys/types.h>
+#include <inttypes.h>],
+    [uintmax_t i = (uintmax_t) -1;],
+    gl_cv_header_inttypes_h=yes,
+    gl_cv_header_inttypes_h=no)])
+  if test $gl_cv_header_inttypes_h = yes; then
+    AC_DEFINE_UNQUOTED(HAVE_INTTYPES_H_WITH_UINTMAX, 1,
+      [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
+       and declares uintmax_t. ])
+  fi
+])
diff --git a/m4/lib-ld_gl.m4 b/m4/lib-ld_gl.m4
new file mode 100644
index 0000000..96c4e2c
--- /dev/null
+++ b/m4/lib-ld_gl.m4
@@ -0,0 +1,110 @@
+# lib-ld.m4 serial 3 (gettext-0.13)
+dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Subroutines of libtool.m4,
+dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
+dnl with libtool.m4.
+
+dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
+AC_DEFUN([AC_LIB_PROG_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  acl_cv_prog_gnu_ld=yes ;;
+*)
+  acl_cv_prog_gnu_ld=no ;;
+esac])
+with_gnu_ld=$acl_cv_prog_gnu_ld
+])
+
+dnl From libtool-1.4. Sets the variable LD.
+AC_DEFUN([AC_LIB_PROG_LD],
+[AC_ARG_WITH(gnu-ld,
+[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
+test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by GCC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]* | [A-Za-z]:[\\/]*)]
+      [re_direlt='/[^/][^/]*/\.\./']
+      # Canonicalize the path of ld
+      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(acl_cv_path_LD,
+[if test -z "$LD"; then
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      acl_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some GNU ld's only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_ld" != no && break ;;
+      *)
+	test "$with_gnu_ld" != yes && break ;;
+      esac
+    fi
+  done
+  IFS="$ac_save_ifs"
+else
+  acl_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT($LD)
+else
+  AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+AC_LIB_PROG_LD_GNU
+])
diff --git a/m4/lib-prefix_gl.m4 b/m4/lib-prefix_gl.m4
new file mode 100644
index 0000000..70d6930
--- /dev/null
+++ b/m4/lib-prefix_gl.m4
@@ -0,0 +1,153 @@
+# lib-prefix.m4 serial 3 (gettext-0.13)
+dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
+dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
+dnl require excessive bracketing.
+ifdef([AC_HELP_STRING],
+[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
+[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
+
+dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
+dnl to access previously installed libraries. The basic assumption is that
+dnl a user will want packages to use other packages he previously installed
+dnl with the same --prefix option.
+dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
+dnl libraries, but is otherwise very convenient.
+AC_DEFUN([AC_LIB_PREFIX],
+[
+  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_LIB_ARG_WITH([lib-prefix],
+[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
+  --without-lib-prefix    don't search for libraries in includedir and libdir],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
+])
+  if test $use_additional = yes; then
+    dnl Potentially add $additional_includedir to $CPPFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/include,
+    dnl   2. if it's already present in $CPPFLAGS,
+    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_includedir" != "X/usr/include"; then
+      haveit=
+      for x in $CPPFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-I$additional_includedir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_includedir" = "X/usr/local/include"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_includedir"; then
+            dnl Really add $additional_includedir to $CPPFLAGS.
+            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
+          fi
+        fi
+      fi
+    fi
+    dnl Potentially add $additional_libdir to $LDFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/lib,
+    dnl   2. if it's already present in $LDFLAGS,
+    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_libdir" != "X/usr/lib"; then
+      haveit=
+      for x in $LDFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-L$additional_libdir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_libdir" = "X/usr/local/lib"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_libdir"; then
+            dnl Really add $additional_libdir to $LDFLAGS.
+            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
+          fi
+        fi
+      fi
+    fi
+  fi
+])
+
+dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
+dnl acl_final_exec_prefix, containing the values to which $prefix and
+dnl $exec_prefix will expand at the end of the configure script.
+AC_DEFUN([AC_LIB_PREPARE_PREFIX],
+[
+  dnl Unfortunately, prefix and exec_prefix get only finally determined
+  dnl at the end of configure.
+  if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
+dnl variables prefix and exec_prefix bound to the values they will have
+dnl at the end of the configure script.
+AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
+[
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  $1
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+])
diff --git a/m4/longdouble.m4 b/m4/longdouble.m4
new file mode 100644
index 0000000..1333d2f
--- /dev/null
+++ b/m4/longdouble.m4
@@ -0,0 +1,30 @@
+# longdouble.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+dnl Test whether the compiler supports the 'long double' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_LONGDOUBLE],
+[
+  AC_CACHE_CHECK([for long double], gt_cv_c_long_double,
+    [if test "$GCC" = yes; then
+       gt_cv_c_long_double=yes
+     else
+       AC_TRY_COMPILE([
+         /* The Stardent Vistra knows sizeof(long double), but does not support it.  */
+         long double foo = 0.0;
+         /* On Ultrix 4.3 cc, long double is 4 and double is 8.  */
+         int array [2*(sizeof(long double) >= sizeof(double)) - 1];
+         ], ,
+         gt_cv_c_long_double=yes, gt_cv_c_long_double=no)
+     fi])
+  if test $gt_cv_c_long_double = yes; then
+    AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the 'long double' type.])
+  fi
+])
diff --git a/m4/longlong_gl.m4 b/m4/longlong_gl.m4
new file mode 100644
index 0000000..7b399e0
--- /dev/null
+++ b/m4/longlong_gl.m4
@@ -0,0 +1,23 @@
+# longlong.m4 serial 5
+dnl Copyright (C) 1999-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# Define HAVE_LONG_LONG if 'long long' works.
+
+AC_DEFUN([gl_AC_TYPE_LONG_LONG],
+[
+  AC_CACHE_CHECK([for long long], ac_cv_type_long_long,
+  [AC_TRY_LINK([long long ll = 1LL; int i = 63;],
+    [long long llmax = (long long) -1;
+     return ll << i | ll >> i | llmax / ll | llmax % ll;],
+    ac_cv_type_long_long=yes,
+    ac_cv_type_long_long=no)])
+  if test $ac_cv_type_long_long = yes; then
+    AC_DEFINE(HAVE_LONG_LONG, 1,
+      [Define if you have the 'long long' type.])
+  fi
+])
diff --git a/m4/mailbox-link.m4 b/m4/mailbox-link.m4
new file mode 100644
index 0000000..3538b80
--- /dev/null
+++ b/m4/mailbox-link.m4
@@ -0,0 +1,549 @@
+# lib-link.m4 serial 4 (gettext-0.12)
+dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
+dnl augments the CPPFLAGS variable.
+AC_DEFUN([AC_LIB_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  define([Name],[translit([$1],[./-], [___])])
+  define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+                               [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
+    AC_LIB_LINKFLAGS_BODY([$1], [$2])
+    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
+    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
+    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
+  ])
+  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
+  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
+  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
+  dnl results of this search when this library appears as a dependency.
+  HAVE_LIB[]NAME=yes
+  undefine([Name])
+  undefine([NAME])
+])
+
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode)
+dnl searches for libname and the libraries corresponding to explicit and
+dnl implicit dependencies, together with the specified include files and
+dnl the ability to compile and link the specified testcode. If found, it
+dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and
+dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
+dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
+AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  define([Name],[translit([$1],[./-], [___])])
+  define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+                               [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+
+  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([$1], [$2])
+
+  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed lib[]Name and not disabled its use
+  dnl via --without-lib[]Name-prefix, he wants to use it.
+  ac_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+    ac_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIB[]NAME"
+    AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no])
+    LIBS="$ac_save_LIBS"
+  ])
+  if test "$ac_cv_lib[]Name" = yes; then
+    HAVE_LIB[]NAME=yes
+    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.])
+    AC_MSG_CHECKING([how to link with lib[]$1])
+    AC_MSG_RESULT([$LIB[]NAME])
+  else
+    HAVE_LIB[]NAME=no
+    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
+    dnl $INC[]NAME either.
+    CPPFLAGS="$ac_save_CPPFLAGS"
+    LIB[]NAME=
+    LTLIB[]NAME=
+  fi
+  AC_SUBST([HAVE_LIB]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  undefine([Name])
+  undefine([NAME])
+])
+
+dnl Determine the platform dependent parameters needed to use rpath:
+dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator,
+dnl hardcode_direct, hardcode_minus_L.
+AC_DEFUN([AC_LIB_RPATH],
+[
+  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
+  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
+  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
+  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
+  AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+  ])
+  wl="$acl_cv_wl"
+  libext="$acl_cv_libext"
+  shlibext="$acl_cv_shlibext"
+  hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  hardcode_direct="$acl_cv_hardcode_direct"
+  hardcode_minus_L="$acl_cv_hardcode_minus_L"
+  dnl Determine whether the user wants rpath handling at all.
+  AC_ARG_ENABLE(rpath,
+    [  --disable-rpath         do not hardcode runtime library paths],
+    :, enable_rpath=yes)
+])
+
+dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
+AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
+[
+  define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+                               [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_LIB_ARG_WITH([lib$1-prefix],
+[  --with-lib$1-prefix[=DIR]  search for lib$1 in DIR/include and DIR/lib
+  --without-lib$1-prefix     don't search for lib$1 in includedir and libdir],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
+])
+  dnl Search the library and its dependencies in $additional_libdir and
+  dnl $LDFLAGS. Using breadth-first-seach.
+  LIB[]NAME=
+  LTLIB[]NAME=
+  INC[]NAME=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='$1 $2'
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
+        dnl or AC_LIB_HAVE_LINKFLAGS call.
+        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
+          else
+            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
+            dnl that this library doesn't exist. So just drop it.
+            :
+          fi
+        else
+          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
+          dnl and the already constructed $LIBNAME/$LTLIBNAME.
+          found_dir=
+          found_la=
+          found_so=
+          found_a=
+          if test $use_additional = yes; then
+            if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
+              found_dir="$additional_libdir"
+              found_so="$additional_libdir/lib$name.$shlibext"
+              if test -f "$additional_libdir/lib$name.la"; then
+                found_la="$additional_libdir/lib$name.la"
+              fi
+            else
+              if test -f "$additional_libdir/lib$name.$libext"; then
+                found_dir="$additional_libdir"
+                found_a="$additional_libdir/lib$name.$libext"
+                if test -f "$additional_libdir/lib$name.la"; then
+                  found_la="$additional_libdir/lib$name.la"
+                fi
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIB[]NAME; do
+              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
+                    found_dir="$dir"
+                    found_so="$dir/lib$name.$shlibext"
+                    if test -f "$dir/lib$name.la"; then
+                      found_la="$dir/lib$name.la"
+                    fi
+                  else
+                    if test -f "$dir/lib$name.$libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/lib$name.$libext"
+                      if test -f "$dir/lib$name.la"; then
+                        found_la="$dir/lib$name.la"
+                      fi
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+            dnl Found the library.
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+              dnl Linking with a shared library. We attempt to hardcode its
+              dnl directory into the executable's runpath, unless it's the
+              dnl standard /usr/lib.
+              if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
+                dnl No hardcoding is needed.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+              else
+                dnl Use an explicit option to hardcode DIR into the resulting
+                dnl binary.
+                dnl Potentially add DIR to ltrpathdirs.
+                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                dnl The hardcoding into $LIBNAME is system dependent.
+                if test "$hardcode_direct" = yes; then
+                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
+                  dnl resulting binary.
+                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                else
+                  if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+                    dnl Use an explicit option to hardcode DIR into the resulting
+                    dnl binary.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    dnl Potentially add DIR to rpathdirs.
+                    dnl The rpathdirs will be appended to $LIBNAME at the end.
+                    haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                    dnl Rely on "-L$found_dir".
+                    dnl But don't add it if it's already contained in the LDFLAGS
+                    dnl or the already constructed $LIBNAME
+                    haveit=
+                    for x in $LDFLAGS $LIB[]NAME; do
+                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
+                    fi
+                    if test "$hardcode_minus_L" != no; then
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    else
+                      dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH
+                      dnl here, because this doesn't fit in flags passed to the
+                      dnl compiler. So give up. No hardcoding. This affects only
+                      dnl very old systems.
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                dnl Linking with a static library.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
+              else
+                dnl We shouldn't come here, but anyway it's good to have a
+                dnl fallback.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
+              fi
+            fi
+            dnl Assume the include files are nearby.
+            additional_includedir=
+            case "$found_dir" in
+              */lib | */lib/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+              dnl Potentially add $additional_includedir to $INCNAME.
+              dnl But don't add it
+              dnl   1. if it's the standard /usr/include,
+              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
+              dnl   3. if it's already present in $CPPFLAGS or the already
+              dnl      constructed $INCNAME,
+              dnl   4. if it doesn't exist as a directory.
+              if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux*) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INC[]NAME; do
+                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                      dnl Really add $additional_includedir to $INCNAME.
+                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+            dnl Look for dependencies.
+            if test -n "$found_la"; then
+              dnl Read the .la file. It defines the variables
+              dnl dlname, library_names, old_library, dependency_libs, current,
+              dnl age, revision, installed, dlopen, dlpreopen, libdir.
+              save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+              dnl We use only dependency_libs.
+              for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                    dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
+                    dnl But don't add it
+                    dnl   1. if it's the standard /usr/lib,
+                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
+                    dnl   3. if it's already present in $LDFLAGS or the already
+                    dnl      constructed $LIBNAME,
+                    dnl   4. if it doesn't exist as a directory.
+                    if test "X$additional_libdir" != "X/usr/lib"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/lib"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux*) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LIBNAME.
+                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LTLIBNAME.
+                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                      dnl Potentially add DIR to rpathdirs.
+                      dnl The rpathdirs will be appended to $LIBNAME at the end.
+                      haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                      dnl Potentially add DIR to ltrpathdirs.
+                      dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                      haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                    dnl Handle this in the next round.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                    dnl Handle this in the next round. Throw away the .la's
+                    dnl directory; it is already contained in a preceding -L
+                    dnl option.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                    dnl Most likely an immediate library name.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
+                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+            dnl Didn't find the library; assume it is in the system directories
+            dnl known to the linker and runtime loader. (All the system
+            dnl directories known to the linker should also be known to the
+            dnl runtime loader, otherwise the system is severely misconfigured.)
+            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$hardcode_libdir_separator"; then
+      dnl Weird platform: only the last -rpath option counts, the user must
+      dnl pass all path elements in one option. We can arrange that for a
+      dnl single library, but not when more than one $LIBNAMEs are used.
+      alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+      done
+      dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl.
+      acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+    else
+      dnl The -rpath options are cumulative.
+      for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+    dnl When using libtool, the option that works for both libraries and
+    dnl executables is -R. The -R options are cumulative.
+    for found_dir in $ltrpathdirs; do
+      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
+    done
+  fi
+])
+
+dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
+dnl unless already present in VAR.
+dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
+dnl contains two or three consecutive elements that belong together.
+AC_DEFUN([AC_LIB_APPENDTOVAR],
+[
+  for element in [$2]; do
+    haveit=
+    for x in $[$1]; do
+      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      [$1]="${[$1]}${[$1]:+ }$element"
+    fi
+  done
+])
diff --git a/m4/mbstate_t.m4 b/m4/mbstate_t.m4
new file mode 100644
index 0000000..df2a275
--- /dev/null
+++ b/m4/mbstate_t.m4
@@ -0,0 +1,30 @@
+# mbstate_t.m4 serial 9
+dnl Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# From Paul Eggert.
+
+# BeOS 5 has <wchar.h> but does not define mbstate_t,
+# so you can't declare an object of that type.
+# Check for this incompatibility with Standard C.
+
+# AC_TYPE_MBSTATE_T
+# -----------------
+AC_DEFUN([AC_TYPE_MBSTATE_T],
+  [AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
+     [AC_COMPILE_IFELSE(
+	[AC_LANG_PROGRAM(
+	   [AC_INCLUDES_DEFAULT
+#	    include <wchar.h>],
+	   [mbstate_t x; return sizeof x;])],
+	[ac_cv_type_mbstate_t=yes],
+	[ac_cv_type_mbstate_t=no])])
+   if test $ac_cv_type_mbstate_t = yes; then
+     AC_DEFINE([HAVE_MBSTATE_T], 1,
+	       [Define to 1 if <wchar.h> declares mbstate_t.])
+   else
+     AC_DEFINE([mbstate_t], int,
+	       [Define to a type if <wchar.h> does not define.])
+   fi])
diff --git a/m4/md5.m4 b/m4/md5.m4
new file mode 100644
index 0000000..861e3ff
--- /dev/null
+++ b/m4/md5.m4
@@ -0,0 +1,15 @@
+# md5.m4 serial 6
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_MD5],
+[
+  dnl Prerequisites of lib/md5.h.
+  AC_REQUIRE([gl_AC_TYPE_UINT32_T])
+
+  dnl Prerequisites of lib/md5.c.
+  AC_REQUIRE([AC_C_BIGENDIAN])
+  :
+])
diff --git a/m4/mempcpy.m4 b/m4/mempcpy.m4
new file mode 100644
index 0000000..13a150d
--- /dev/null
+++ b/m4/mempcpy.m4
@@ -0,0 +1,23 @@
+# mempcpy.m4 serial 3
+dnl Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MEMPCPY],
+[
+  MU_LIBSOURCES([mempcpy.c, mempcpy.h])
+
+  dnl Persuade glibc <string.h> to declare mempcpy().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  MU_REPLACE_FUNCS(mempcpy)
+  if test $ac_cv_func_mempcpy = no; then
+    gl_PREREQ_MEMPCPY
+  fi
+])
+
+# Prerequisites of lib/mempcpy.c.
+AC_DEFUN([gl_PREREQ_MEMPCPY], [
+  :
+])
diff --git a/m4/nls.m4 b/m4/nls.m4
new file mode 100644
index 0000000..36bc493
--- /dev/null
+++ b/m4/nls.m4
@@ -0,0 +1,49 @@
+# nls.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+AC_DEFUN([AM_NLS],
+[
+  AC_MSG_CHECKING([whether NLS is requested])
+  dnl Default is enabled NLS
+  AC_ARG_ENABLE(nls,
+    [  --disable-nls           do not use Native Language Support],
+    USE_NLS=$enableval, USE_NLS=yes)
+  AC_MSG_RESULT($USE_NLS)
+  AC_SUBST(USE_NLS)
+])
+
+AC_DEFUN([AM_MKINSTALLDIRS],
+[
+  dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
+  dnl find the mkinstalldirs script in another subdir but $(top_srcdir).
+  dnl Try to locate it.
+  MKINSTALLDIRS=
+  if test -n "$ac_aux_dir"; then
+    case "$ac_aux_dir" in
+      /*) MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs" ;;
+      *) MKINSTALLDIRS="\$(top_builddir)/$ac_aux_dir/mkinstalldirs" ;;
+    esac
+  fi
+  if test -z "$MKINSTALLDIRS"; then
+    MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
+  fi
+  AC_SUBST(MKINSTALLDIRS)
+])
diff --git a/m4/obstack.m4 b/m4/obstack.m4
new file mode 100644
index 0000000..ea60f7f
--- /dev/null
+++ b/m4/obstack.m4
@@ -0,0 +1,23 @@
+# obstack.m4 serial 4
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_OBSTACK],
+[
+  AC_FUNC_OBSTACK
+  dnl Note: AC_FUNC_OBSTACK does AC_LIBSOURCES([obstack.h, obstack.c]).
+  if test $ac_cv_func_obstack = no; then
+    gl_PREREQ_OBSTACK
+  fi
+])
+
+# Prerequisites of lib/obstack.c.
+AC_DEFUN([gl_PREREQ_OBSTACK],
+[
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
+  :
+])
diff --git a/m4/onceonly.m4 b/m4/onceonly.m4
new file mode 100644
index 0000000..9fc510e
--- /dev/null
+++ b/m4/onceonly.m4
@@ -0,0 +1,86 @@
+# onceonly_2_57.m4 serial 3
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl This file defines some "once only" variants of standard autoconf macros.
+dnl   AC_CHECK_HEADERS_ONCE         like  AC_CHECK_HEADERS
+dnl   AC_CHECK_FUNCS_ONCE           like  AC_CHECK_FUNCS
+dnl   AC_CHECK_DECLS_ONCE           like  AC_CHECK_DECLS
+dnl   AC_REQUIRE([AC_HEADER_STDC])  like  AC_HEADER_STDC
+dnl The advantage is that the check for each of the headers/functions/decls
+dnl will be put only once into the 'configure' file. It keeps the size of
+dnl the 'configure' file down, and avoids redundant output when 'configure'
+dnl is run.
+dnl The drawback is that the checks cannot be conditionalized. If you write
+dnl   if some_condition; then gl_CHECK_HEADERS(stdlib.h); fi
+dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to
+dnl empty, and the check will be inserted before the body of the AC_DEFUNed
+dnl function.
+
+dnl This is like onceonly.m4, except that it uses diversions to named sections
+dnl DEFAULTS and INIT_PREPARE in order to check all requested headers at once,
+dnl thus reducing the size of 'configure'. Works with autoconf-2.57. The
+dnl size reduction is ca. 9%.
+
+dnl Autoconf version 2.57 or newer is recommended.
+AC_PREREQ(2.54)
+
+# AC_CHECK_HEADERS_ONCE(HEADER1 HEADER2 ...) is a once-only variant of
+# AC_CHECK_HEADERS(HEADER1 HEADER2 ...).
+AC_DEFUN([AC_CHECK_HEADERS_ONCE], [
+  :
+  AC_FOREACH([gl_HEADER_NAME], [$1], [
+    AC_DEFUN([gl_CHECK_HEADER_]m4_quote(translit(gl_HEADER_NAME,
+                                                 [./-], [___])), [
+      m4_divert_text([INIT_PREPARE],
+        [gl_header_list="$gl_header_list gl_HEADER_NAME"])
+      gl_HEADERS_EXPANSION
+      AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_HEADER_NAME])),
+        [Define to 1 if you have the <]m4_defn([gl_HEADER_NAME])[> header file.])
+    ])
+    AC_REQUIRE([gl_CHECK_HEADER_]m4_quote(translit(gl_HEADER_NAME,
+                                                   [./-], [___])))
+  ])
+])
+m4_define([gl_HEADERS_EXPANSION], [
+  m4_divert_text([DEFAULTS], [gl_header_list=])
+  AC_CHECK_HEADERS([$gl_header_list])
+  m4_define([gl_HEADERS_EXPANSION], [])
+])
+
+# AC_CHECK_FUNCS_ONCE(FUNC1 FUNC2 ...) is a once-only variant of
+# AC_CHECK_FUNCS(FUNC1 FUNC2 ...).
+AC_DEFUN([AC_CHECK_FUNCS_ONCE], [
+  :
+  AC_FOREACH([gl_FUNC_NAME], [$1], [
+    AC_DEFUN([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]), [
+      m4_divert_text([INIT_PREPARE],
+        [gl_func_list="$gl_func_list gl_FUNC_NAME"])
+      gl_FUNCS_EXPANSION
+      AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_FUNC_NAME])),
+        [Define to 1 if you have the `]m4_defn([gl_FUNC_NAME])[' function.])
+    ])
+    AC_REQUIRE([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]))
+  ])
+])
+m4_define([gl_FUNCS_EXPANSION], [
+  m4_divert_text([DEFAULTS], [gl_func_list=])
+  AC_CHECK_FUNCS([$gl_func_list])
+  m4_define([gl_FUNCS_EXPANSION], [])
+])
+
+# AC_CHECK_DECLS_ONCE(DECL1 DECL2 ...) is a once-only variant of
+# AC_CHECK_DECLS(DECL1, DECL2, ...).
+AC_DEFUN([AC_CHECK_DECLS_ONCE], [
+  :
+  AC_FOREACH([gl_DECL_NAME], [$1], [
+    AC_DEFUN([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]), [
+      AC_CHECK_DECLS(m4_defn([gl_DECL_NAME]))
+    ])
+    AC_REQUIRE([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]))
+  ])
+])
diff --git a/m4/po_gl.m4 b/m4/po_gl.m4
new file mode 100644
index 0000000..e161998
--- /dev/null
+++ b/m4/po_gl.m4
@@ -0,0 +1,426 @@
+# po.m4 serial 3 (gettext-0.14)
+dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+dnl Checks for all prerequisites of the po subdirectory.
+AC_DEFUN([AM_PO_SUBDIRS],
+[
+  AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+  AC_REQUIRE([AC_PROG_INSTALL])dnl
+  AC_REQUIRE([AM_MKINSTALLDIRS])dnl
+  AC_REQUIRE([AM_NLS])dnl
+
+  dnl Perform the following tests also if --disable-nls has been given,
+  dnl because they are needed for "make dist" to work.
+
+  dnl Search for GNU msgfmt in the PATH.
+  dnl The first test excludes Solaris msgfmt and early GNU msgfmt versions.
+  dnl The second test excludes FreeBSD msgfmt.
+  AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
+    [$ac_dir/$ac_word --statistics /dev/null >/dev/null 2>&1 &&
+     (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+    :)
+  AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
+
+  dnl Search for GNU xgettext 0.12 or newer in the PATH.
+  dnl The first test excludes Solaris xgettext and early GNU xgettext versions.
+  dnl The second test excludes FreeBSD xgettext.
+  AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
+    [$ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >/dev/null 2>&1 &&
+     (if $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+    :)
+  dnl Remove leftover from FreeBSD xgettext call.
+  rm -f messages.po
+
+  dnl Search for GNU msgmerge 0.11 or newer in the PATH.
+  AM_PATH_PROG_WITH_TEST(MSGMERGE, msgmerge,
+    [$ac_dir/$ac_word --update -q /dev/null /dev/null >/dev/null 2>&1], :)
+
+  dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+  dnl Test whether we really found GNU msgfmt.
+  if test "$GMSGFMT" != ":"; then
+    dnl If it is no GNU msgfmt we define it as : so that the
+    dnl Makefiles still can work.
+    if $GMSGFMT --statistics /dev/null >/dev/null 2>&1 &&
+       (if $GMSGFMT --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+      : ;
+    else
+      GMSGFMT=`echo "$GMSGFMT" | sed -e 's,^.*/,,'`
+      AC_MSG_RESULT(
+        [found $GMSGFMT program is not GNU msgfmt; ignore it])
+      GMSGFMT=":"
+    fi
+  fi
+
+  dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+  dnl Test whether we really found GNU xgettext.
+  if test "$XGETTEXT" != ":"; then
+    dnl If it is no GNU xgettext we define it as : so that the
+    dnl Makefiles still can work.
+    if $XGETTEXT --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >/dev/null 2>&1 &&
+       (if $XGETTEXT --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+      : ;
+    else
+      AC_MSG_RESULT(
+        [found xgettext program is not GNU xgettext; ignore it])
+      XGETTEXT=":"
+    fi
+    dnl Remove leftover from FreeBSD xgettext call.
+    rm -f messages.po
+  fi
+
+  AC_OUTPUT_COMMANDS([
+    for ac_file in $CONFIG_FILES; do
+      # Support "outfile[:infile[:infile...]]"
+      case "$ac_file" in
+        *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+      esac
+      # PO directories have a Makefile.in generated from Makefile.in.in.
+      case "$ac_file" in */Makefile.in)
+        # Adjust a relative srcdir.
+        ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+        ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
+        ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+        # In autoconf-2.13 it is called $ac_given_srcdir.
+        # In autoconf-2.50 it is called $srcdir.
+        test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+        case "$ac_given_srcdir" in
+          .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+          /*) top_srcdir="$ac_given_srcdir" ;;
+          *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+        esac
+        if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+          rm -f "$ac_dir/POTFILES"
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ 	]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+          POMAKEFILEDEPS="POTFILES.in"
+          # ALL_LINGUAS, POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES depend
+          # on $ac_dir but don't depend on user-specified configuration
+          # parameters.
+          if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+            # The LINGUAS file contains the set of available languages.
+            if test -n "$OBSOLETE_ALL_LINGUAS"; then
+              test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+            fi
+            ALL_LINGUAS_=`sed -e "/^#/d" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+            # Hide the ALL_LINGUAS assigment from automake.
+            eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+            POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+          else
+            # The set of available languages was given in configure.in.
+            eval 'ALL_LINGUAS''=$OBSOLETE_ALL_LINGUAS'
+          fi
+          # Compute POFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).po)
+          # Compute UPDATEPOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(lang).po-update)
+          # Compute DUMMYPOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(lang).nop)
+          # Compute GMOFILES
+          # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).gmo)
+          case "$ac_given_srcdir" in
+            .) srcdirpre= ;;
+            *) srcdirpre='$(srcdir)/' ;;
+          esac
+          POFILES=
+          UPDATEPOFILES=
+          DUMMYPOFILES=
+          GMOFILES=
+          for lang in $ALL_LINGUAS; do
+            POFILES="$POFILES $srcdirpre$lang.po"
+            UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+            DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+            GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+          done
+          # CATALOGS depends on both $ac_dir and the user's LINGUAS
+          # environment variable.
+          INST_LINGUAS=
+          if test -n "$ALL_LINGUAS"; then
+            for presentlang in $ALL_LINGUAS; do
+              useit=no
+              if test "%UNSET%" != "$LINGUAS"; then
+                desiredlanguages="$LINGUAS"
+              else
+                desiredlanguages="$ALL_LINGUAS"
+              fi
+              for desiredlang in $desiredlanguages; do
+                # Use the presentlang catalog if desiredlang is
+                #   a. equal to presentlang, or
+                #   b. a variant of presentlang (because in this case,
+                #      presentlang can be used as a fallback for messages
+                #      which are not translated in the desiredlang catalog).
+                case "$desiredlang" in
+                  "$presentlang"*) useit=yes;;
+                esac
+              done
+              if test $useit = yes; then
+                INST_LINGUAS="$INST_LINGUAS $presentlang"
+              fi
+            done
+          fi
+          CATALOGS=
+          if test -n "$INST_LINGUAS"; then
+            for lang in $INST_LINGUAS; do
+              CATALOGS="$CATALOGS $lang.gmo"
+            done
+          fi
+          test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+          sed -e "/^POTFILES =/r $ac_dir/POTFILES" -e "/^# Makevars/r $ac_given_srcdir/$ac_dir/Makevars" -e "s|@POFILES@|$POFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@POMAKEFILEDEPS@|$POMAKEFILEDEPS|g" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+          for f in "$ac_given_srcdir/$ac_dir"/Rules-*; do
+            if test -f "$f"; then
+              case "$f" in
+                *.orig | *.bak | *~) ;;
+                *) cat "$f" >> "$ac_dir/Makefile" ;;
+              esac
+            fi
+          done
+        fi
+        ;;
+      esac
+    done],
+   [# Capture the value of obsolete ALL_LINGUAS because we need it to compute
+    # POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES, CATALOGS. But hide it
+    # from automake.
+    eval 'OBSOLETE_ALL_LINGUAS''="$ALL_LINGUAS"'
+    # Capture the value of LINGUAS because we need it to compute CATALOGS.
+    LINGUAS="${LINGUAS-%UNSET%}"
+   ])
+])
+
+dnl Postprocesses a Makefile in a directory containing PO files.
+AC_DEFUN([AM_POSTPROCESS_PO_MAKEFILE],
+[
+  # When this code is run, in config.status, two variables have already been
+  # set:
+  # - OBSOLETE_ALL_LINGUAS is the value of LINGUAS set in configure.in,
+  # - LINGUAS is the value of the environment variable LINGUAS at configure
+  #   time.
+
+changequote(,)dnl
+  # Adjust a relative srcdir.
+  ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+  ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
+  ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+  # In autoconf-2.13 it is called $ac_given_srcdir.
+  # In autoconf-2.50 it is called $srcdir.
+  test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+  case "$ac_given_srcdir" in
+    .)  top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+    /*) top_srcdir="$ac_given_srcdir" ;;
+    *)  top_srcdir="$ac_dots$ac_given_srcdir" ;;
+  esac
+
+  # Find a way to echo strings without interpreting backslash.
+  if test "X`(echo '\t') 2>/dev/null`" = 'X\t'; then
+    gt_echo='echo'
+  else
+    if test "X`(printf '%s\n' '\t') 2>/dev/null`" = 'X\t'; then
+      gt_echo='printf %s\n'
+    else
+      echo_func () {
+        cat <<EOT
+$*
+EOT
+      }
+      gt_echo='echo_func'
+    fi
+  fi
+
+  # A sed script that extracts the value of VARIABLE from a Makefile.
+  sed_x_variable='
+# Test if the hold space is empty.
+x
+s/P/P/
+x
+ta
+# Yes it was empty. Look if we have the expected variable definition.
+/^[	 ]*VARIABLE[	 ]*=/{
+  # Seen the first line of the variable definition.
+  s/^[	 ]*VARIABLE[	 ]*=//
+  ba
+}
+bd
+:a
+# Here we are processing a line from the variable definition.
+# Remove comment, more precisely replace it with a space.
+s/#.*$/ /
+# See if the line ends in a backslash.
+tb
+:b
+s/\\$//
+# Print the line, without the trailing backslash.
+p
+tc
+# There was no trailing backslash. The end of the variable definition is
+# reached. Clear the hold space.
+s/^.*$//
+x
+bd
+:c
+# A trailing backslash means that the variable definition continues in the
+# next line. Put a nonempty string into the hold space to indicate this.
+s/^.*$/P/
+x
+:d
+'
+changequote([,])dnl
+
+  # Set POTFILES to the value of the Makefile variable POTFILES.
+  sed_x_POTFILES="`$gt_echo \"$sed_x_variable\" | sed -e '/^ *#/d' -e 's/VARIABLE/POTFILES/g'`"
+  POTFILES=`sed -n -e "$sed_x_POTFILES" < "$ac_file"`
+  # Compute POTFILES_DEPS as
+  #   $(foreach file, $(POTFILES), $(top_srcdir)/$(file))
+  POTFILES_DEPS=
+  for file in $POTFILES; do
+    POTFILES_DEPS="$POTFILES_DEPS "'$(top_srcdir)/'"$file"
+  done
+  POMAKEFILEDEPS=""
+
+  if test -n "$OBSOLETE_ALL_LINGUAS"; then
+    test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+  fi
+  if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+    # The LINGUAS file contains the set of available languages.
+    ALL_LINGUAS_=`sed -e "/^#/d" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+    POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+  else
+    # Set ALL_LINGUAS to the value of the Makefile variable LINGUAS.
+    sed_x_LINGUAS="`$gt_echo \"$sed_x_variable\" | sed -e '/^ *#/d' -e 's/VARIABLE/LINGUAS/g'`"
+    ALL_LINGUAS_=`sed -n -e "$sed_x_LINGUAS" < "$ac_file"`
+  fi
+  # Hide the ALL_LINGUAS assigment from automake.
+  eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+  # Compute POFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).po)
+  # Compute UPDATEPOFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(lang).po-update)
+  # Compute DUMMYPOFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(lang).nop)
+  # Compute GMOFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).gmo)
+  # Compute PROPERTIESFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(top_srcdir)/$(DOMAIN)_$(lang).properties)
+  # Compute CLASSFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(top_srcdir)/$(DOMAIN)_$(lang).class)
+  # Compute QMFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).qm)
+  # Compute MSGFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(frob $(lang)).msg)
+  # Compute RESOURCESDLLFILES
+  # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(frob $(lang))/$(DOMAIN).resources.dll)
+  case "$ac_given_srcdir" in
+    .) srcdirpre= ;;
+    *) srcdirpre='$(srcdir)/' ;;
+  esac
+  POFILES=
+  UPDATEPOFILES=
+  DUMMYPOFILES=
+  GMOFILES=
+  PROPERTIESFILES=
+  CLASSFILES=
+  QMFILES=
+  MSGFILES=
+  RESOURCESDLLFILES=
+  for lang in $ALL_LINGUAS; do
+    POFILES="$POFILES $srcdirpre$lang.po"
+    UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+    DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+    GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+    PROPERTIESFILES="$PROPERTIESFILES \$(top_srcdir)/\$(DOMAIN)_$lang.properties"
+    CLASSFILES="$CLASSFILES \$(top_srcdir)/\$(DOMAIN)_$lang.class"
+    QMFILES="$QMFILES $srcdirpre$lang.qm"
+    frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+    MSGFILES="$MSGFILES $srcdirpre$frobbedlang.msg"
+    frobbedlang=`echo $lang | sed -e 's/_/-/g'`
+    RESOURCESDLLFILES="$RESOURCESDLLFILES $srcdirpre$frobbedlang/\$(DOMAIN).resources.dll"
+  done
+  # CATALOGS depends on both $ac_dir and the user's LINGUAS
+  # environment variable.
+  INST_LINGUAS=
+  if test -n "$ALL_LINGUAS"; then
+    for presentlang in $ALL_LINGUAS; do
+      useit=no
+      if test "%UNSET%" != "$LINGUAS"; then
+        desiredlanguages="$LINGUAS"
+      else
+        desiredlanguages="$ALL_LINGUAS"
+      fi
+      for desiredlang in $desiredlanguages; do
+        # Use the presentlang catalog if desiredlang is
+        #   a. equal to presentlang, or
+        #   b. a variant of presentlang (because in this case,
+        #      presentlang can be used as a fallback for messages
+        #      which are not translated in the desiredlang catalog).
+        case "$desiredlang" in
+          "$presentlang"*) useit=yes;;
+        esac
+      done
+      if test $useit = yes; then
+        INST_LINGUAS="$INST_LINGUAS $presentlang"
+      fi
+    done
+  fi
+  CATALOGS=
+  JAVACATALOGS=
+  QTCATALOGS=
+  TCLCATALOGS=
+  CSHARPCATALOGS=
+  if test -n "$INST_LINGUAS"; then
+    for lang in $INST_LINGUAS; do
+      CATALOGS="$CATALOGS $lang.gmo"
+      JAVACATALOGS="$JAVACATALOGS \$(DOMAIN)_$lang.properties"
+      QTCATALOGS="$QTCATALOGS $lang.qm"
+      frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+      TCLCATALOGS="$TCLCATALOGS $frobbedlang.msg"
+      frobbedlang=`echo $lang | sed -e 's/_/-/g'`
+      CSHARPCATALOGS="$CSHARPCATALOGS $frobbedlang/\$(DOMAIN).resources.dll"
+    done
+  fi
+
+  sed -e "s|@POTFILES_DEPS@|$POTFILES_DEPS|g" -e "s|@POFILES@|$POFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@PROPERTIESFILES@|$PROPERTIESFILES|g" -e "s|@CLASSFILES@|$CLASSFILES|g" -e "s|@QMFILES@|$QMFILES|g" -e "s|@MSGFILES@|$MSGFILES|g" -e "s|@RESOURCESDLLFILES@|$RESOURCESDLLFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@JAVACATALOGS@|$JAVACATALOGS|g" -e "s|@QTCATALOGS@|$QTCATALOGS|g" -e "s|@TCLCATALOGS@|$TCLCATALOGS|g" -e "s|@CSHARPCATALOGS@|$CSHARPCATALOGS|g" -e 's,^#distdir:,distdir:,' < "$ac_file" > "$ac_file.tmp"
+  if grep -l '@TCLCATALOGS@' "$ac_file" > /dev/null; then
+    # Add dependencies that cannot be formulated as a simple suffix rule.
+    for lang in $ALL_LINGUAS; do
+      frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+      cat >> "$ac_file.tmp" <<EOF
+$frobbedlang.msg: $lang.po
+	@echo "\$(MSGFMT) -c --tcl -d \$(srcdir) -l $lang $srcdirpre$lang.po"; \
+	\$(MSGFMT) -c --tcl -d "\$(srcdir)" -l $lang $srcdirpre$lang.po || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
+EOF
+    done
+  fi
+  if grep -l '@CSHARPCATALOGS@' "$ac_file" > /dev/null; then
+    # Add dependencies that cannot be formulated as a simple suffix rule.
+    for lang in $ALL_LINGUAS; do
+      frobbedlang=`echo $lang | sed -e 's/_/-/g'`
+      cat >> "$ac_file.tmp" <<EOF
+$frobbedlang/\$(DOMAIN).resources.dll: $lang.po
+	@echo "\$(MSGFMT) -c --csharp -d \$(srcdir) -l $lang $srcdirpre$lang.po -r \$(DOMAIN)"; \
+	\$(MSGFMT) -c --csharp -d "\$(srcdir)" -l $lang $srcdirpre$lang.po -r "\$(DOMAIN)" || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
+EOF
+    done
+  fi
+  if test -n "$POMAKEFILEDEPS"; then
+    cat >> "$ac_file.tmp" <<EOF
+Makefile: $POMAKEFILEDEPS
+EOF
+  fi
+  mv "$ac_file.tmp" "$ac_file"
+])
diff --git a/m4/printf-posix.m4 b/m4/printf-posix.m4
new file mode 100644
index 0000000..186ba6a
--- /dev/null
+++ b/m4/printf-posix.m4
@@ -0,0 +1,46 @@
+# printf-posix.m4 serial 2 (gettext-0.13.1)
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+dnl Test whether the printf() function supports POSIX/XSI format strings with
+dnl positions.
+
+AC_DEFUN([gt_PRINTF_POSIX],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings],
+    gt_cv_func_printf_posix,
+    [
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+/* The string "%2$d %1$d", with dollar characters protected from the shell's
+   dollar expansion (possibly an autoconf bug).  */
+static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
+static char buf[100];
+int main ()
+{
+  sprintf (buf, format, 33, 55);
+  return (strcmp (buf, "55 33") != 0);
+}], gt_cv_func_printf_posix=yes, gt_cv_func_printf_posix=no,
+      [
+        AC_EGREP_CPP(notposix, [
+#if defined __NetBSD__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
+  notposix
+#endif
+        ], gt_cv_func_printf_posix="guessing no",
+           gt_cv_func_printf_posix="guessing yes")
+      ])
+    ])
+  case $gt_cv_func_printf_posix in
+    *yes)
+      AC_DEFINE(HAVE_POSIX_PRINTF, 1,
+        [Define if your printf() function supports format strings with positions.])
+      ;;
+  esac
+])
diff --git a/m4/progtest.m4 b/m4/progtest.m4
new file mode 100644
index 0000000..8fe527c
--- /dev/null
+++ b/m4/progtest.m4
@@ -0,0 +1,91 @@
+# progtest.m4 serial 3 (gettext-0.12)
+dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+# Search path for a program which passes the given test.
+
+dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
+dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN([AM_PATH_PROG_WITH_TEST],
+[
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+  ac_executable_p="test -x"
+else
+  ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL(ac_cv_path_$1,
+[case "[$]$1" in
+  [[\\/]]* | ?:[[\\/]]*)
+    ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
+    ;;
+  *)
+    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in ifelse([$5], , $PATH, [$5]); do
+      IFS="$ac_save_IFS"
+      test -z "$ac_dir" && ac_dir=.
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+          if [$3]; then
+            ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
+            break 2
+          fi
+        fi
+      done
+    done
+    IFS="$ac_save_IFS"
+dnl If no 4th arg is given, leave the cache variable unset,
+dnl so AC_PATH_PROGS will keep looking.
+ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
+])dnl
+    ;;
+esac])dnl
+$1="$ac_cv_path_$1"
+if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
+  AC_MSG_RESULT([$]$1)
+else
+  AC_MSG_RESULT(no)
+fi
+AC_SUBST($1)dnl
+])
diff --git a/m4/restrict.m4 b/m4/restrict.m4
new file mode 100644
index 0000000..1f3bbb9
--- /dev/null
+++ b/m4/restrict.m4
@@ -0,0 +1,38 @@
+#serial 1003
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# This macro can be removed once we can rely on Autoconf 2.57a or later,
+# since we can then use its AC_C_RESTRICT.
+
+# gl_C_RESTRICT
+# --------------
+# Determine whether the C/C++ compiler supports the "restrict" keyword
+# introduced in ANSI C99, or an equivalent.  Do nothing if the compiler
+# accepts it.  Otherwise, if the compiler supports an equivalent,
+# define "restrict" to be that.  Here are some variants:
+# - GCC supports both __restrict and __restrict__
+# - older DEC Alpha C compilers support only __restrict
+# - _Restrict is the only spelling accepted by Sun WorkShop 6 update 2 C
+# Otherwise, define "restrict" to be empty.
+AC_DEFUN([gl_C_RESTRICT],
+[AC_CACHE_CHECK([for C/C++ restrict keyword], gl_cv_c_restrict,
+  [gl_cv_c_restrict=no
+   # Try the official restrict keyword, then gcc's __restrict, and
+   # the less common variants.
+   for ac_kw in restrict __restrict __restrict__ _Restrict; do
+     AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+      [float * $ac_kw x;])],
+      [gl_cv_c_restrict=$ac_kw; break])
+   done
+  ])
+ case $gl_cv_c_restrict in
+   restrict) ;;
+   no) AC_DEFINE(restrict,,
+	[Define to equivalent of C99 restrict keyword, or to nothing if this
+	is not supported.  Do not define if restrict is supported directly.]) ;;
+   *)  AC_DEFINE_UNQUOTED(restrict, $gl_cv_c_restrict) ;;
+ esac
+])
diff --git a/m4/setenv.m4 b/m4/setenv.m4
new file mode 100644
index 0000000..4c76be1
--- /dev/null
+++ b/m4/setenv.m4
@@ -0,0 +1,70 @@
+# setenv.m4 serial 5
+dnl Copyright (C) 2001-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gt_FUNC_SETENV],
+[
+  AC_REPLACE_FUNCS(setenv unsetenv)
+  if test $ac_cv_func_setenv = no; then
+    gl_PREREQ_SETENV
+  fi
+  if test $ac_cv_func_unsetenv = no; then
+    gl_PREREQ_UNSETENV
+  else
+    AC_CACHE_CHECK([for unsetenv() return type], gt_cv_func_unsetenv_ret,
+      [AC_TRY_COMPILE([#include <stdlib.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+int unsetenv (const char *name);
+#else
+int unsetenv();
+#endif
+], , gt_cv_func_unsetenv_ret='int', gt_cv_func_unsetenv_ret='void')])
+    if test $gt_cv_func_unsetenv_ret = 'void'; then
+      AC_DEFINE(VOID_UNSETENV, 1, [Define if unsetenv() returns void, not int.])
+    fi
+  fi
+])
+
+# Check if a variable is properly declared.
+# gt_CHECK_VAR_DECL(includes,variable)
+AC_DEFUN([gt_CHECK_VAR_DECL],
+[
+  define([gt_cv_var], [gt_cv_var_]$2[_declaration])
+  AC_MSG_CHECKING([if $2 is properly declared])
+  AC_CACHE_VAL(gt_cv_var, [
+    AC_TRY_COMPILE([$1
+      extern struct { int foo; } $2;],
+      [$2.foo = 1;],
+      gt_cv_var=no,
+      gt_cv_var=yes)])
+  AC_MSG_RESULT($gt_cv_var)
+  if test $gt_cv_var = yes; then
+    AC_DEFINE([HAVE_]translit($2, [a-z], [A-Z])[_DECL], 1,
+              [Define if you have the declaration of $2.])
+  fi
+])
+
+# Prerequisites of lib/setenv.c.
+AC_DEFUN([gl_PREREQ_SETENV],
+[
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_CHECK_HEADERS(search.h)
+  AC_CHECK_FUNCS(tsearch)
+  gt_CHECK_VAR_DECL([#include <errno.h>], errno)
+  gt_CHECK_VAR_DECL([#include <unistd.h>], environ)
+])
+
+# Prerequisites of lib/unsetenv.c.
+AC_DEFUN([gl_PREREQ_UNSETENV],
+[
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+  gt_CHECK_VAR_DECL([#include <errno.h>], errno)
+  gt_CHECK_VAR_DECL([#include <unistd.h>], environ)
+])
diff --git a/m4/signed.m4 b/m4/signed.m4
new file mode 100644
index 0000000..dc1f54f
--- /dev/null
+++ b/m4/signed.m4
@@ -0,0 +1,19 @@
+# signed.m4 serial 1 (gettext-0.10.40)
+dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([bh_C_SIGNED],
+[
+  AC_CACHE_CHECK([for signed], bh_cv_c_signed,
+   [AC_TRY_COMPILE(, [signed char x;], bh_cv_c_signed=yes, bh_cv_c_signed=no)])
+  if test $bh_cv_c_signed = no; then
+    AC_DEFINE(signed, ,
+              [Define to empty if the C compiler doesn't support this keyword.])
+  fi
+])
diff --git a/m4/size_max.m4 b/m4/size_max.m4
new file mode 100644
index 0000000..5762fc3
--- /dev/null
+++ b/m4/size_max.m4
@@ -0,0 +1,61 @@
+# size_max.m4 serial 2
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_SIZE_MAX],
+[
+  AC_CHECK_HEADERS(stdint.h)
+  dnl First test whether the system already has SIZE_MAX.
+  AC_MSG_CHECKING([for SIZE_MAX])
+  result=
+  AC_EGREP_CPP([Found it], [
+#include <limits.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+#ifdef SIZE_MAX
+Found it
+#endif
+], result=yes)
+  if test -z "$result"; then
+    dnl Define it ourselves. Here we assume that the type 'size_t' is not wider
+    dnl than the type 'unsigned long'.
+    dnl The _AC_COMPUTE_INT macro works up to LONG_MAX, since it uses 'expr',
+    dnl which is guaranteed to work from LONG_MIN to LONG_MAX.
+    _AC_COMPUTE_INT([~(size_t)0 / 10], res_hi,
+      [#include <stddef.h>], result=?)
+    _AC_COMPUTE_INT([~(size_t)0 % 10], res_lo,
+      [#include <stddef.h>], result=?)
+    _AC_COMPUTE_INT([sizeof (size_t) <= sizeof (unsigned int)], fits_in_uint,
+      [#include <stddef.h>], result=?)
+    if test "$fits_in_uint" = 1; then
+      dnl Even though SIZE_MAX fits in an unsigned int, it must be of type
+      dnl 'unsigned long' if the type 'size_t' is the same as 'unsigned long'.
+      AC_TRY_COMPILE([#include <stddef.h>
+        extern size_t foo;
+        extern unsigned long foo;
+        ], [], fits_in_uint=0)
+    fi
+    if test -z "$result"; then
+      if test "$fits_in_uint" = 1; then
+        result="$res_hi$res_lo"U
+      else
+        result="$res_hi$res_lo"UL
+      fi
+    else
+      dnl Shouldn't happen, but who knows...
+      result='~(size_t)0'
+    fi
+  fi
+  AC_MSG_RESULT([$result])
+  if test "$result" != yes; then
+    AC_DEFINE_UNQUOTED([SIZE_MAX], [$result],
+      [Define as the maximum value of type 'size_t', if the system doesn't define it.])
+  fi
+])
diff --git a/m4/snprintf.m4 b/m4/snprintf.m4
new file mode 100644
index 0000000..432e037
--- /dev/null
+++ b/m4/snprintf.m4
@@ -0,0 +1,15 @@
+# snprintf.m4 serial 2
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SNPRINTF],
+[
+  AC_REPLACE_FUNCS(snprintf)
+  AC_CHECK_DECLS_ONCE(snprintf)
+  gl_PREREQ_SNPRINTF
+])
+
+# Prerequisites of lib/snprintf.c.
+AC_DEFUN([gl_PREREQ_SNPRINTF], [:])
diff --git a/m4/ssize_t.m4 b/m4/ssize_t.m4
new file mode 100644
index 0000000..19b379f
--- /dev/null
+++ b/m4/ssize_t.m4
@@ -0,0 +1,20 @@
+# ssize_t.m4 serial 3 (gettext-0.13)
+dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether ssize_t is defined.
+
+AC_DEFUN([gt_TYPE_SSIZE_T],
+[
+  AC_CACHE_CHECK([for ssize_t], gt_cv_ssize_t,
+    [AC_TRY_COMPILE([#include <sys/types.h>],
+       [int x = sizeof (ssize_t *) + sizeof (ssize_t);],
+       gt_cv_ssize_t=yes, gt_cv_ssize_t=no)])
+  if test $gt_cv_ssize_t = no; then
+    AC_DEFINE(ssize_t, int,
+              [Define as a signed type of the same size as size_t.])
+  fi
+])
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4
new file mode 100644
index 0000000..3f6b4bf
--- /dev/null
+++ b/m4/stdbool.m4
@@ -0,0 +1,83 @@
+# Check for stdbool.h that conforms to C99.
+
+dnl Copyright (C) 2002-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Prepare for substituting <stdbool.h> if it is not supported.
+
+AC_DEFUN([AM_STDBOOL_H],
+[
+  AC_REQUIRE([AC_HEADER_STDBOOL])
+
+  # Define two additional variables used in the Makefile substitution.
+
+  if test "$ac_cv_header_stdbool_h" = yes; then
+    STDBOOL_H=''
+  else
+    STDBOOL_H='stdbool.h'
+  fi
+  AC_SUBST([STDBOOL_H])
+
+  if test "$ac_cv_type__Bool" = yes; then
+    HAVE__BOOL=1
+  else
+    HAVE__BOOL=0
+  fi
+  AC_SUBST([HAVE__BOOL])
+])
+
+# This macro is only needed in autoconf <= 2.59.  Newer versions of autoconf
+# have this macro built-in.
+
+AC_DEFUN([AC_HEADER_STDBOOL],
+  [AC_CACHE_CHECK([for stdbool.h that conforms to C99],
+     [ac_cv_header_stdbool_h],
+     [AC_TRY_COMPILE(
+	[
+	  #include <stdbool.h>
+	  #ifndef bool
+	   "error: bool is not defined"
+	  #endif
+	  #ifndef false
+	   "error: false is not defined"
+	  #endif
+	  #if false
+	   "error: false is not 0"
+	  #endif
+	  #ifndef true
+	   "error: true is not defined"
+	  #endif
+	  #if true != 1
+	   "error: true is not 1"
+	  #endif
+	  #ifndef __bool_true_false_are_defined
+	   "error: __bool_true_false_are_defined is not defined"
+	  #endif
+
+	  struct s { _Bool s: 1; _Bool t; } s;
+
+	  char a[true == 1 ? 1 : -1];
+	  char b[false == 0 ? 1 : -1];
+	  char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+	  char d[(bool) -0.5 == true ? 1 : -1];
+	  bool e = &s;
+	  char f[(_Bool) -0.0 == false ? 1 : -1];
+	  char g[true];
+	  char h[sizeof (_Bool)];
+	  char i[sizeof s.t];
+	  enum { j = false, k = true, l = false * true, m = true * 256 };
+	  _Bool n[m];
+	  char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+	],
+	[
+	  return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !j + !k + !l
+		  + !m + !n + !o);
+	],
+	[ac_cv_header_stdbool_h=yes],
+	[ac_cv_header_stdbool_h=no])])
+   AC_CHECK_TYPES([_Bool])
+   if test $ac_cv_header_stdbool_h = yes; then
+     AC_DEFINE(HAVE_STDBOOL_H, 1, [Define to 1 if stdbool.h conforms to C99.])
+   fi])
diff --git a/m4/stdint_h_gl.m4 b/m4/stdint_h_gl.m4
new file mode 100644
index 0000000..3355f35
--- /dev/null
+++ b/m4/stdint_h_gl.m4
@@ -0,0 +1,26 @@
+# stdint_h.m4 serial 5
+dnl Copyright (C) 1997-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# Define HAVE_STDINT_H_WITH_UINTMAX if <stdint.h> exists,
+# doesn't clash with <sys/types.h>, and declares uintmax_t.
+
+AC_DEFUN([gl_AC_HEADER_STDINT_H],
+[
+  AC_CACHE_CHECK([for stdint.h], gl_cv_header_stdint_h,
+  [AC_TRY_COMPILE(
+    [#include <sys/types.h>
+#include <stdint.h>],
+    [uintmax_t i = (uintmax_t) -1;],
+    gl_cv_header_stdint_h=yes,
+    gl_cv_header_stdint_h=no)])
+  if test $gl_cv_header_stdint_h = yes; then
+    AC_DEFINE_UNQUOTED(HAVE_STDINT_H_WITH_UINTMAX, 1,
+      [Define if <stdint.h> exists, doesn't clash with <sys/types.h>,
+       and declares uintmax_t. ])
+  fi
+])
diff --git a/m4/strcase.m4 b/m4/strcase.m4
new file mode 100644
index 0000000..33efdec
--- /dev/null
+++ b/m4/strcase.m4
@@ -0,0 +1,37 @@
+# strcase.m4 serial 1
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_STRCASE],
+[
+  gl_FUNC_STRCASECMP
+  gl_FUNC_STRNCASECMP
+])
+
+AC_DEFUN([gl_FUNC_STRCASECMP],
+[
+  MU_REPLACE_FUNCS(strcasecmp)
+  if test $ac_cv_func_strcasecmp = no; then
+    gl_PREREQ_STRCASECMP
+  fi
+])
+
+AC_DEFUN([gl_FUNC_STRNCASECMP],
+[
+  MU_REPLACE_FUNCS(strncasecmp)
+  if test $ac_cv_func_strncasecmp = no; then
+    gl_PREREQ_STRNCASECMP
+  fi
+])
+
+# Prerequisites of lib/strcasecmp.c.
+AC_DEFUN([gl_PREREQ_STRCASECMP], [
+  :
+])
+
+# Prerequisites of lib/strncasecmp.c.
+AC_DEFUN([gl_PREREQ_STRNCASECMP], [
+  :
+])
diff --git a/m4/strchrnul.m4 b/m4/strchrnul.m4
new file mode 100644
index 0000000..4626dc5
--- /dev/null
+++ b/m4/strchrnul.m4
@@ -0,0 +1,19 @@
+# strchrnul.m4 serial 3
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRCHRNUL],
+[
+  dnl Persuade glibc <string.h> to declare strchrnul().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  MU_REPLACE_FUNCS(strchrnul)
+  if test $ac_cv_func_strchrnul = no; then
+    gl_PREREQ_STRCHRNUL
+  fi
+])
+
+# Prerequisites of lib/strchrnul.c.
+AC_DEFUN([gl_PREREQ_STRCHRNUL], [:])
diff --git a/m4/strerror_r.m4 b/m4/strerror_r.m4
new file mode 100644
index 0000000..28924b1
--- /dev/null
+++ b/m4/strerror_r.m4
@@ -0,0 +1,49 @@
+#serial 1004
+# This file is not needed if you can assume Autoconf 2.54 or later.
+# Experimental replacement for the function in the latest CVS autoconf.
+# Use with the error.c file in ../lib.
+
+# Copyright (C) 2001 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+undefine([AC_FUNC_STRERROR_R])
+
+# AC_FUNC_STRERROR_R
+# ------------------
+AC_DEFUN([AC_FUNC_STRERROR_R],
+[AC_CHECK_DECLS([strerror_r])
+AC_CHECK_FUNCS([strerror_r])
+AC_CACHE_CHECK([whether strerror_r returns char *],
+               ac_cv_func_strerror_r_char_p,
+   [
+    ac_cv_func_strerror_r_char_p=no
+    if test $ac_cv_have_decl_strerror_r = yes; then
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
+	[[
+	  char buf[100];
+	  char x = *strerror_r (0, buf, sizeof buf);
+	  char *p = strerror_r (0, buf, sizeof buf);
+	]])],
+			ac_cv_func_strerror_r_char_p=yes)
+    else
+      # strerror_r is not declared.  Choose between
+      # systems that have relatively inaccessible declarations for the
+      # function.  BeOS and DEC UNIX 4.0 fall in this category, but the
+      # former has a strerror_r that returns char*, while the latter
+      # has a strerror_r that returns `int'.
+      # This test should segfault on the DEC system.
+      AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
+	extern char *strerror_r ();],
+	[[char buf[100];
+	  char x = *strerror_r (0, buf, sizeof buf);
+	  exit (!isalpha (x));]])],
+                    ac_cv_func_strerror_r_char_p=yes, , :)
+    fi
+  ])
+if test $ac_cv_func_strerror_r_char_p = yes; then
+  AC_DEFINE([STRERROR_R_CHAR_P], 1,
+	    [Define to 1 if strerror_r returns char *.])
+fi
+])# AC_FUNC_STRERROR_R
diff --git a/m4/strndup.m4 b/m4/strndup.m4
new file mode 100644
index 0000000..a94e697
--- /dev/null
+++ b/m4/strndup.m4
@@ -0,0 +1,21 @@
+# strndup.m4 serial 3
+dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRNDUP],
+[
+  dnl Persuade glibc <string.h> to declare strndup().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  MU_REPLACE_FUNCS(strndup)
+  if test $ac_cv_func_strndup = no; then
+    gl_PREREQ_STRNDUP
+  fi
+])
+
+# Prerequisites of lib/strndup.c.
+AC_DEFUN([gl_PREREQ_STRNDUP], [
+  AC_CHECK_DECLS(strnlen)
+])
diff --git a/m4/strnlen.m4 b/m4/strnlen.m4
new file mode 100644
index 0000000..ff69fa1
--- /dev/null
+++ b/m4/strnlen.m4
@@ -0,0 +1,25 @@
+# strnlen.m4 serial 4
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRNLEN],
+[
+  dnl Persuade glibc <string.h> to declare strnlen().
+  AC_REQUIRE([AC_GNU_SOURCE])
+
+  AC_FUNC_STRNLEN
+  if test $ac_cv_func_strnlen_working = no; then
+    # This is necessary because automake-1.6.1 doens't understand
+    # that the above use of AC_FUNC_STRNLEN means we may have to use
+    # lib/strnlen.c.
+    #MU_LIBOBJ(strnlen)
+    AC_DEFINE(strnlen, rpl_strnlen,
+      [Define to rpl_strnlen if the replacement function should be used.])
+    gl_PREREQ_STRNLEN
+  fi
+])
+
+# Prerequisites of lib/strnlen.c.
+AC_DEFUN([gl_PREREQ_STRNLEN], [:])
diff --git a/m4/strtok_r.m4 b/m4/strtok_r.m4
new file mode 100644
index 0000000..6423cca
--- /dev/null
+++ b/m4/strtok_r.m4
@@ -0,0 +1,17 @@
+# strtok_r.m4 serial 2
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRTOK_R],
+[
+  MU_REPLACE_FUNCS(strtok_r)
+  AC_CHECK_DECLS_ONCE(strtok_r)
+  gl_PREREQ_STRTOK_R
+])
+
+# Prerequisites of lib/strtok_r.h and lib/strtok_r.c.
+AC_DEFUN([gl_PREREQ_STRTOK_R], [
+  AC_REQUIRE([gl_C_RESTRICT])
+])
diff --git a/m4/sysexits.m4 b/m4/sysexits.m4
new file mode 100644
index 0000000..69d2091
--- /dev/null
+++ b/m4/sysexits.m4
@@ -0,0 +1,13 @@
+# sysexits.m4 serial 2
+dnl Copyright (C) 2003,2005 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_SYSEXITS],
+[
+  AC_CHECK_HEADERS(sysexits.h,
+    [SYSEXITS_H=],
+    [SYSEXITS_H=sysexits.h])
+  AC_SUBST([SYSEXITS_H])
+])
diff --git a/m4/uint32_t.m4 b/m4/uint32_t.m4
new file mode 100644
index 0000000..1fb5e66
--- /dev/null
+++ b/m4/uint32_t.m4
@@ -0,0 +1,53 @@
+# uint32_t.m4 serial 4
+
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Written by Paul Eggert.
+
+AC_DEFUN([gl_AC_TYPE_UINT32_T],
+[
+  AC_CACHE_CHECK([for uint32_t], gl_cv_c_uint32_t,
+    [gl_cv_c_uint32_t=no
+     for ac_type in "uint32_t" "unsigned int" \
+	 "unsigned long int" "unsigned short int"; do
+       AC_COMPILE_IFELSE(
+	 [AC_LANG_BOOL_COMPILE_TRY(
+	    [AC_INCLUDES_DEFAULT],
+	    [[($ac_type) -1 == 4294967295U]])],
+	 [gl_cv_c_uint32_t=$ac_type])
+       test "$gl_cv_c_uint32_t" != no && break
+     done])
+  case "$gl_cv_c_uint32_t" in
+  no|uint32_t) ;;
+  *)
+    AC_DEFINE(_UINT32_T, 1,
+      [Define for Solaris 2.5.1 so uint32_t typedef from <sys/synch.h>,
+       <pthread.h>, or <semaphore.h> is not used. If the typedef was
+       allowed, the #define below would cause a syntax error.])
+    AC_DEFINE_UNQUOTED(uint32_t, $gl_cv_c_uint32_t,
+      [Define to the type of a unsigned integer type of width exactly 32 bits
+       if such a type exists and the standard includes do not define it.])
+    ;;
+  esac
+
+  AC_CACHE_CHECK([for UINT32_MAX], gl_cv_c_uint32_max,
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_BOOL_COMPILE_TRY(
+	  [AC_INCLUDES_DEFAULT],
+	  [[UINT32_MAX == 4294967295U]])],
+       [gl_cv_c_uint32_max=yes],
+       [gl_cv_c_uint32_max=no])])
+  case $gl_cv_c_uint32_max,$gl_cv_c_uint32_t in
+  yes,*) ;;
+  *,no) ;;
+  *)
+    AC_DEFINE(UINT32_MAX, 4294967295U,
+      [Define to its maximum value if an unsigned integer type of width
+       exactly 32 bits exists and the standard includes do not define
+       UINT32_MAX.])
+    ;;
+  esac
+])
diff --git a/m4/uintmax_t_gl.m4 b/m4/uintmax_t_gl.m4
new file mode 100644
index 0000000..bf83ed7
--- /dev/null
+++ b/m4/uintmax_t_gl.m4
@@ -0,0 +1,30 @@
+# uintmax_t.m4 serial 9
+dnl Copyright (C) 1997-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+AC_PREREQ(2.13)
+
+# Define uintmax_t to 'unsigned long' or 'unsigned long long'
+# if it is not already defined in <stdint.h> or <inttypes.h>.
+
+AC_DEFUN([gl_AC_TYPE_UINTMAX_T],
+[
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
+    AC_REQUIRE([gl_AC_TYPE_UNSIGNED_LONG_LONG])
+    test $ac_cv_type_unsigned_long_long = yes \
+      && ac_type='unsigned long long' \
+      || ac_type='unsigned long'
+    AC_DEFINE_UNQUOTED(uintmax_t, $ac_type,
+      [Define to unsigned long or unsigned long long
+       if <stdint.h> and <inttypes.h> don't define.])
+  else
+    AC_DEFINE(HAVE_UINTMAX_T, 1,
+      [Define if you have the 'uintmax_t' type in <stdint.h> or <inttypes.h>.])
+  fi
+])
diff --git a/m4/ulonglong_gl.m4 b/m4/ulonglong_gl.m4
new file mode 100644
index 0000000..dee10cc
--- /dev/null
+++ b/m4/ulonglong_gl.m4
@@ -0,0 +1,23 @@
+# ulonglong.m4 serial 4
+dnl Copyright (C) 1999-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+# Define HAVE_UNSIGNED_LONG_LONG if 'unsigned long long' works.
+
+AC_DEFUN([gl_AC_TYPE_UNSIGNED_LONG_LONG],
+[
+  AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long,
+  [AC_TRY_LINK([unsigned long long ull = 1ULL; int i = 63;],
+    [unsigned long long ullmax = (unsigned long long) -1;
+     return ull << i | ull >> i | ullmax / ull | ullmax % ull;],
+    ac_cv_type_unsigned_long_long=yes,
+    ac_cv_type_unsigned_long_long=no)])
+  if test $ac_cv_type_unsigned_long_long = yes; then
+    AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1,
+      [Define if you have the 'unsigned long long' type.])
+  fi
+])
diff --git a/m4/vasnprintf.m4 b/m4/vasnprintf.m4
new file mode 100644
index 0000000..514c67d
--- /dev/null
+++ b/m4/vasnprintf.m4
@@ -0,0 +1,58 @@
+# vasnprintf.m4 serial 5
+dnl Copyright (C) 2002-2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_VASNPRINTF],
+[
+  AC_REQUIRE([gl_EOVERFLOW])
+  MU_REPLACE_FUNCS(vasnprintf)
+  if test $ac_cv_func_vasnprintf = no; then
+    MU_LIBOBJ(printf-args)
+    MU_LIBOBJ(printf-parse)
+    MU_LIBOBJ(asnprintf)
+    gl_PREREQ_PRINTF_ARGS
+    gl_PREREQ_PRINTF_PARSE
+    gl_PREREQ_VASNPRINTF
+    gl_PREREQ_ASNPRINTF
+  fi
+])
+
+# Prequisites of lib/printf-args.h, lib/printf-args.c.
+AC_DEFUN([gl_PREREQ_PRINTF_ARGS],
+[
+  AC_REQUIRE([bh_C_SIGNED])
+  AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+  AC_REQUIRE([gt_TYPE_LONGDOUBLE])
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+])
+
+# Prequisites of lib/printf-parse.h, lib/printf-parse.c.
+AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
+[
+  AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+  AC_REQUIRE([gt_TYPE_LONGDOUBLE])
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  AC_REQUIRE([AC_TYPE_SIZE_T])
+  AC_CHECK_TYPES(ptrdiff_t)
+  AC_REQUIRE([gt_AC_TYPE_INTMAX_T])
+])
+
+# Prerequisites of lib/vasnprintf.c.
+AC_DEFUN([gl_PREREQ_VASNPRINTF],
+[
+  AC_REQUIRE([AC_FUNC_ALLOCA])
+  AC_REQUIRE([gl_AC_TYPE_LONG_LONG])
+  AC_REQUIRE([gt_TYPE_LONGDOUBLE])
+  AC_REQUIRE([gt_TYPE_WCHAR_T])
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  AC_CHECK_FUNCS(snprintf wcslen)
+])
+
+# Prerequisites of lib/asnprintf.c.
+AC_DEFUN([gl_PREREQ_ASNPRINTF],
+[
+])
diff --git a/m4/vasprintf.m4 b/m4/vasprintf.m4
new file mode 100644
index 0000000..385e92e
--- /dev/null
+++ b/m4/vasprintf.m4
@@ -0,0 +1,25 @@
+# vasprintf.m4 serial 1
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_VASPRINTF],
+[
+  AC_REPLACE_FUNCS(vasprintf)
+  if test $ac_cv_func_vasprintf = no; then
+    AC_LIBOBJ(asprintf)
+    gl_PREREQ_VASPRINTF
+    gl_PREREQ_ASPRINTF
+  fi
+])
+
+# Prerequisites of lib/vasprintf.c.
+AC_DEFUN([gl_PREREQ_VASPRINTF],
+[
+])
+
+# Prerequisites of lib/asprintf.c.
+AC_DEFUN([gl_PREREQ_ASPRINTF],
+[
+])
diff --git a/m4/vsnprintf.m4 b/m4/vsnprintf.m4
new file mode 100644
index 0000000..174d126
--- /dev/null
+++ b/m4/vsnprintf.m4
@@ -0,0 +1,15 @@
+# vsnprintf.m4 serial 2
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_VSNPRINTF],
+[
+  MU_REPLACE_FUNCS(vsnprintf)
+  AC_CHECK_DECLS_ONCE(vsnprintf)
+  gl_PREREQ_VSNPRINTF
+])
+
+# Prerequisites of lib/vsnprintf.c.
+AC_DEFUN([gl_PREREQ_VSNPRINTF], [:])
diff --git a/m4/wchar_t.m4 b/m4/wchar_t.m4
new file mode 100644
index 0000000..d8fd1ec
--- /dev/null
+++ b/m4/wchar_t.m4
@@ -0,0 +1,22 @@
+# wchar_t.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+dnl Test whether <stddef.h> has the 'wchar_t' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WCHAR_T],
+[
+  AC_CACHE_CHECK([for wchar_t], gt_cv_c_wchar_t,
+    [AC_TRY_COMPILE([#include <stddef.h>
+       wchar_t foo = (wchar_t)'\0';], ,
+       gt_cv_c_wchar_t=yes, gt_cv_c_wchar_t=no)])
+  if test $gt_cv_c_wchar_t = yes; then
+    AC_DEFINE(HAVE_WCHAR_T, 1, [Define if you have the 'wchar_t' type.])
+  fi
+])
diff --git a/m4/wint_t.m4 b/m4/wint_t.m4
new file mode 100644
index 0000000..3d8d215
--- /dev/null
+++ b/m4/wint_t.m4
@@ -0,0 +1,22 @@
+# wint_t.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+dnl Test whether <wchar.h> has the 'wint_t' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WINT_T],
+[
+  AC_CACHE_CHECK([for wint_t], gt_cv_c_wint_t,
+    [AC_TRY_COMPILE([#include <wchar.h>
+       wint_t foo = (wchar_t)'\0';], ,
+       gt_cv_c_wint_t=yes, gt_cv_c_wint_t=no)])
+  if test $gt_cv_c_wint_t = yes; then
+    AC_DEFINE(HAVE_WINT_T, 1, [Define if you have the 'wint_t' type.])
+  fi
+])
diff --git a/m4/xalloc.m4 b/m4/xalloc.m4
new file mode 100644
index 0000000..0e711f6
--- /dev/null
+++ b/m4/xalloc.m4
@@ -0,0 +1,22 @@
+# xalloc.m4 serial 11
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_XALLOC],
+[
+  gl_PREREQ_XALLOC
+  gl_PREREQ_XMALLOC
+])
+
+# Prerequisites of lib/xalloc.h.
+AC_DEFUN([gl_PREREQ_XALLOC], [
+  :
+])
+
+# Prerequisites of lib/xmalloc.c.
+AC_DEFUN([gl_PREREQ_XMALLOC], [
+  AC_REQUIRE([AC_C_INLINE])
+  :
+])
diff --git a/m4/xsize.m4 b/m4/xsize.m4
new file mode 100644
index 0000000..9b7cf9b
--- /dev/null
+++ b/m4/xsize.m4
@@ -0,0 +1,14 @@
+# xsize.m4 serial 2
+dnl Copyright (C) 2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+AC_DEFUN([gl_XSIZE],
+[
+  dnl Prerequisites of lib/xsize.h.
+  AC_REQUIRE([gl_SIZE_MAX])
+  AC_CHECK_HEADERS(stdint.h)
+])
diff --git a/m4/xstrtol.m4 b/m4/xstrtol.m4
new file mode 100644
index 0000000..2d76d2f
--- /dev/null
+++ b/m4/xstrtol.m4
@@ -0,0 +1,33 @@
+# xstrtol.m4 serial 5
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_XSTRTOL],
+[
+  AC_REQUIRE([gl_PREREQ_XSTRTOL])
+  AC_REQUIRE([gl_PREREQ_XSTRTOUL])
+])
+
+# Prerequisites of lib/xstrtol.h.
+AC_DEFUN([gl_PREREQ_XSTRTOL_H],
+[
+  AC_REQUIRE([gl_AC_TYPE_INTMAX_T])
+  AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
+])
+
+# Prerequisites of lib/xstrtol.c.
+AC_DEFUN([gl_PREREQ_XSTRTOL],
+[
+  AC_REQUIRE([gl_PREREQ_XSTRTOL_H])
+  AC_REQUIRE([AC_HEADER_STDC])
+  AC_CHECK_FUNCS_ONCE(isascii)
+  AC_CHECK_DECLS([strtoimax, strtoumax])
+])
+
+# Prerequisites of lib/xstrtoul.c.
+AC_DEFUN([gl_PREREQ_XSTRTOUL],
+[
+  AC_REQUIRE([gl_PREREQ_XSTRTOL])
+])
diff --git a/mailbox/alloca.c b/mailbox/alloca.c
new file mode 100644
index 0000000..d1d5447
--- /dev/null
+++ b/mailbox/alloca.c
@@ -0,0 +1,491 @@
+/* alloca.c -- allocate automatically reclaimed memory
+   (Mostly) portable public-domain implementation -- D A Gwyn
+
+   This implementation of the PWB library alloca function,
+   which is used to allocate space off the run-time stack so
+   that it is automatically reclaimed upon procedure exit,
+   was inspired by discussions with J. Q. Johnson of Cornell.
+   J.Otto Tennant <jot@cray.com> contributed the Cray support.
+
+   There are some preprocessor constants that can
+   be defined when compiling for your specific system, for
+   improved efficiency; however, the defaults should be okay.
+
+   The general concept of this implementation is to keep
+   track of all alloca-allocated blocks, and reclaim any
+   that are found to be deeper in the stack than the current
+   invocation.  This heuristic does not reclaim storage as
+   soon as it becomes invalid, but it will do so eventually.
+
+   As a special case, alloca(0) reclaims storage without
+   allocating any.  It is a good idea to use alloca(0) in
+   your main control loop, etc. to force garbage collection.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <alloca.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+#ifdef emacs
+# include "lisp.h"
+# include "blockinput.h"
+# ifdef EMACS_FREE
+#  undef free
+#  define free EMACS_FREE
+# endif
+#else
+# define memory_full() abort ()
+#endif
+
+/* If compiling with GCC 2, this file's not needed.  */
+#if !defined (__GNUC__) || __GNUC__ < 2
+
+/* If someone has defined alloca as a macro,
+   there must be some other way alloca is supposed to work.  */
+# ifndef alloca
+
+#  ifdef emacs
+#   ifdef static
+/* actually, only want this if static is defined as ""
+   -- this is for usg, in which emacs must undefine static
+   in order to make unexec workable
+   */
+#    ifndef STACK_DIRECTION
+you
+lose
+-- must know STACK_DIRECTION at compile-time
+/* Using #error here is not wise since this file should work for
+   old and obscure compilers.  */
+#    endif /* STACK_DIRECTION undefined */
+#   endif /* static */
+#  endif /* emacs */
+
+/* If your stack is a linked list of frames, you have to
+   provide an "address metric" ADDRESS_FUNCTION macro.  */
+
+#  if defined (CRAY) && defined (CRAY_STACKSEG_END)
+long i00afunc ();
+#   define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg))
+#  else
+#   define ADDRESS_FUNCTION(arg) &(arg)
+#  endif
+
+/* Define STACK_DIRECTION if you know the direction of stack
+   growth for your system; otherwise it will be automatically
+   deduced at run-time.
+
+   STACK_DIRECTION > 0 => grows toward higher addresses
+   STACK_DIRECTION < 0 => grows toward lower addresses
+   STACK_DIRECTION = 0 => direction of growth unknown  */
+
+#  ifndef STACK_DIRECTION
+#   define STACK_DIRECTION	0	/* Direction unknown.  */
+#  endif
+
+#  if STACK_DIRECTION != 0
+
+#   define STACK_DIR	STACK_DIRECTION	/* Known at compile-time.  */
+
+#  else /* STACK_DIRECTION == 0; need run-time code.  */
+
+static int stack_dir;		/* 1 or -1 once known.  */
+#   define STACK_DIR	stack_dir
+
+static void
+find_stack_direction (void)
+{
+  static char *addr = NULL;	/* Address of first `dummy', once known.  */
+  auto char dummy;		/* To get stack address.  */
+
+  if (addr == NULL)
+    {				/* Initial entry.  */
+      addr = ADDRESS_FUNCTION (dummy);
+
+      find_stack_direction ();	/* Recurse once.  */
+    }
+  else
+    {
+      /* Second entry.  */
+      if (ADDRESS_FUNCTION (dummy) > addr)
+	stack_dir = 1;		/* Stack grew upward.  */
+      else
+	stack_dir = -1;		/* Stack grew downward.  */
+    }
+}
+
+#  endif /* STACK_DIRECTION == 0 */
+
+/* An "alloca header" is used to:
+   (a) chain together all alloca'ed blocks;
+   (b) keep track of stack depth.
+
+   It is very important that sizeof(header) agree with malloc
+   alignment chunk size.  The following default should work okay.  */
+
+#  ifndef	ALIGN_SIZE
+#   define ALIGN_SIZE	sizeof(double)
+#  endif
+
+typedef union hdr
+{
+  char align[ALIGN_SIZE];	/* To force sizeof(header).  */
+  struct
+    {
+      union hdr *next;		/* For chaining headers.  */
+      char *deep;		/* For stack depth measure.  */
+    } h;
+} header;
+
+static header *last_alloca_header = NULL;	/* -> last alloca header.  */
+
+/* Return a pointer to at least SIZE bytes of storage,
+   which will be automatically reclaimed upon exit from
+   the procedure that called alloca.  Originally, this space
+   was supposed to be taken from the current stack frame of the
+   caller, but that method cannot be made to work for some
+   implementations of C, for example under Gould's UTX/32.  */
+
+void *
+alloca (size_t size)
+{
+  auto char probe;		/* Probes stack depth: */
+  register char *depth = ADDRESS_FUNCTION (probe);
+
+#  if STACK_DIRECTION == 0
+  if (STACK_DIR == 0)		/* Unknown growth direction.  */
+    find_stack_direction ();
+#  endif
+
+  /* Reclaim garbage, defined as all alloca'd storage that
+     was allocated from deeper in the stack than currently.  */
+
+  {
+    register header *hp;	/* Traverses linked list.  */
+
+#  ifdef emacs
+    BLOCK_INPUT;
+#  endif
+
+    for (hp = last_alloca_header; hp != NULL;)
+      if ((STACK_DIR > 0 && hp->h.deep > depth)
+	  || (STACK_DIR < 0 && hp->h.deep < depth))
+	{
+	  register header *np = hp->h.next;
+
+	  free (hp);		/* Collect garbage.  */
+
+	  hp = np;		/* -> next header.  */
+	}
+      else
+	break;			/* Rest are not deeper.  */
+
+    last_alloca_header = hp;	/* -> last valid storage.  */
+
+#  ifdef emacs
+    UNBLOCK_INPUT;
+#  endif
+  }
+
+  if (size == 0)
+    return NULL;		/* No allocation required.  */
+
+  /* Allocate combined header + user data storage.  */
+
+  {
+    /* Address of header.  */
+    register header *new;
+
+    size_t combined_size = sizeof (header) + size;
+    if (combined_size < sizeof (header))
+      memory_full ();
+
+    new = malloc (combined_size);
+
+    if (! new)
+      memory_full ();
+
+    new->h.next = last_alloca_header;
+    new->h.deep = depth;
+
+    last_alloca_header = new;
+
+    /* User storage begins just after header.  */
+
+    return (void *) (new + 1);
+  }
+}
+
+#  if defined (CRAY) && defined (CRAY_STACKSEG_END)
+
+#   ifdef DEBUG_I00AFUNC
+#    include <stdio.h>
+#   endif
+
+#   ifndef CRAY_STACK
+#    define CRAY_STACK
+#    ifndef CRAY2
+/* Stack structures for CRAY-1, CRAY X-MP, and CRAY Y-MP */
+struct stack_control_header
+  {
+    long shgrow:32;		/* Number of times stack has grown.  */
+    long shaseg:32;		/* Size of increments to stack.  */
+    long shhwm:32;		/* High water mark of stack.  */
+    long shsize:32;		/* Current size of stack (all segments).  */
+  };
+
+/* The stack segment linkage control information occurs at
+   the high-address end of a stack segment.  (The stack
+   grows from low addresses to high addresses.)  The initial
+   part of the stack segment linkage control information is
+   0200 (octal) words.  This provides for register storage
+   for the routine which overflows the stack.  */
+
+struct stack_segment_linkage
+  {
+    long ss[0200];		/* 0200 overflow words.  */
+    long sssize:32;		/* Number of words in this segment.  */
+    long ssbase:32;		/* Offset to stack base.  */
+    long:32;
+    long sspseg:32;		/* Offset to linkage control of previous
+				   segment of stack.  */
+    long:32;
+    long sstcpt:32;		/* Pointer to task common address block.  */
+    long sscsnm;		/* Private control structure number for
+				   microtasking.  */
+    long ssusr1;		/* Reserved for user.  */
+    long ssusr2;		/* Reserved for user.  */
+    long sstpid;		/* Process ID for pid based multi-tasking.  */
+    long ssgvup;		/* Pointer to multitasking thread giveup.  */
+    long sscray[7];		/* Reserved for Cray Research.  */
+    long ssa0;
+    long ssa1;
+    long ssa2;
+    long ssa3;
+    long ssa4;
+    long ssa5;
+    long ssa6;
+    long ssa7;
+    long sss0;
+    long sss1;
+    long sss2;
+    long sss3;
+    long sss4;
+    long sss5;
+    long sss6;
+    long sss7;
+  };
+
+#    else /* CRAY2 */
+/* The following structure defines the vector of words
+   returned by the STKSTAT library routine.  */
+struct stk_stat
+  {
+    long now;			/* Current total stack size.  */
+    long maxc;			/* Amount of contiguous space which would
+				   be required to satisfy the maximum
+				   stack demand to date.  */
+    long high_water;		/* Stack high-water mark.  */
+    long overflows;		/* Number of stack overflow ($STKOFEN) calls.  */
+    long hits;			/* Number of internal buffer hits.  */
+    long extends;		/* Number of block extensions.  */
+    long stko_mallocs;		/* Block allocations by $STKOFEN.  */
+    long underflows;		/* Number of stack underflow calls ($STKRETN).  */
+    long stko_free;		/* Number of deallocations by $STKRETN.  */
+    long stkm_free;		/* Number of deallocations by $STKMRET.  */
+    long segments;		/* Current number of stack segments.  */
+    long maxs;			/* Maximum number of stack segments so far.  */
+    long pad_size;		/* Stack pad size.  */
+    long current_address;	/* Current stack segment address.  */
+    long current_size;		/* Current stack segment size.  This
+				   number is actually corrupted by STKSTAT to
+				   include the fifteen word trailer area.  */
+    long initial_address;	/* Address of initial segment.  */
+    long initial_size;		/* Size of initial segment.  */
+  };
+
+/* The following structure describes the data structure which trails
+   any stack segment.  I think that the description in 'asdef' is
+   out of date.  I only describe the parts that I am sure about.  */
+
+struct stk_trailer
+  {
+    long this_address;		/* Address of this block.  */
+    long this_size;		/* Size of this block (does not include
+				   this trailer).  */
+    long unknown2;
+    long unknown3;
+    long link;			/* Address of trailer block of previous
+				   segment.  */
+    long unknown5;
+    long unknown6;
+    long unknown7;
+    long unknown8;
+    long unknown9;
+    long unknown10;
+    long unknown11;
+    long unknown12;
+    long unknown13;
+    long unknown14;
+  };
+
+#    endif /* CRAY2 */
+#   endif /* not CRAY_STACK */
+
+#   ifdef CRAY2
+/* Determine a "stack measure" for an arbitrary ADDRESS.
+   I doubt that "lint" will like this much.  */
+
+static long
+i00afunc (long *address)
+{
+  struct stk_stat status;
+  struct stk_trailer *trailer;
+  long *block, size;
+  long result = 0;
+
+  /* We want to iterate through all of the segments.  The first
+     step is to get the stack status structure.  We could do this
+     more quickly and more directly, perhaps, by referencing the
+     $LM00 common block, but I know that this works.  */
+
+  STKSTAT (&status);
+
+  /* Set up the iteration.  */
+
+  trailer = (struct stk_trailer *) (status.current_address
+				    + status.current_size
+				    - 15);
+
+  /* There must be at least one stack segment.  Therefore it is
+     a fatal error if "trailer" is null.  */
+
+  if (trailer == 0)
+    abort ();
+
+  /* Discard segments that do not contain our argument address.  */
+
+  while (trailer != 0)
+    {
+      block = (long *) trailer->this_address;
+      size = trailer->this_size;
+      if (block == 0 || size == 0)
+	abort ();
+      trailer = (struct stk_trailer *) trailer->link;
+      if ((block <= address) && (address < (block + size)))
+	break;
+    }
+
+  /* Set the result to the offset in this segment and add the sizes
+     of all predecessor segments.  */
+
+  result = address - block;
+
+  if (trailer == 0)
+    {
+      return result;
+    }
+
+  do
+    {
+      if (trailer->this_size <= 0)
+	abort ();
+      result += trailer->this_size;
+      trailer = (struct stk_trailer *) trailer->link;
+    }
+  while (trailer != 0);
+
+  /* We are done.  Note that if you present a bogus address (one
+     not in any segment), you will get a different number back, formed
+     from subtracting the address of the first block.  This is probably
+     not what you want.  */
+
+  return (result);
+}
+
+#   else /* not CRAY2 */
+/* Stack address function for a CRAY-1, CRAY X-MP, or CRAY Y-MP.
+   Determine the number of the cell within the stack,
+   given the address of the cell.  The purpose of this
+   routine is to linearize, in some sense, stack addresses
+   for alloca.  */
+
+static long
+i00afunc (long address)
+{
+  long stkl = 0;
+
+  long size, pseg, this_segment, stack;
+  long result = 0;
+
+  struct stack_segment_linkage *ssptr;
+
+  /* Register B67 contains the address of the end of the
+     current stack segment.  If you (as a subprogram) store
+     your registers on the stack and find that you are past
+     the contents of B67, you have overflowed the segment.
+
+     B67 also points to the stack segment linkage control
+     area, which is what we are really interested in.  */
+
+  stkl = CRAY_STACKSEG_END ();
+  ssptr = (struct stack_segment_linkage *) stkl;
+
+  /* If one subtracts 'size' from the end of the segment,
+     one has the address of the first word of the segment.
+
+     If this is not the first segment, 'pseg' will be
+     nonzero.  */
+
+  pseg = ssptr->sspseg;
+  size = ssptr->sssize;
+
+  this_segment = stkl - size;
+
+  /* It is possible that calling this routine itself caused
+     a stack overflow.  Discard stack segments which do not
+     contain the target address.  */
+
+  while (!(this_segment <= address && address <= stkl))
+    {
+#    ifdef DEBUG_I00AFUNC
+      fprintf (stderr, "%011o %011o %011o\n", this_segment, address, stkl);
+#    endif
+      if (pseg == 0)
+	break;
+      stkl = stkl - pseg;
+      ssptr = (struct stack_segment_linkage *) stkl;
+      size = ssptr->sssize;
+      pseg = ssptr->sspseg;
+      this_segment = stkl - size;
+    }
+
+  result = address - this_segment;
+
+  /* If you subtract pseg from the current end of the stack,
+     you get the address of the previous stack segment's end.
+     This seems a little convoluted to me, but I'll bet you save
+     a cycle somewhere.  */
+
+  while (pseg != 0)
+    {
+#    ifdef DEBUG_I00AFUNC
+      fprintf (stderr, "%011o %011o\n", pseg, size);
+#    endif
+      stkl = stkl - pseg;
+      ssptr = (struct stack_segment_linkage *) stkl;
+      size = ssptr->sssize;
+      pseg = ssptr->sspseg;
+      result += size;
+    }
+  return (result);
+}
+
+#   endif /* not CRAY2 */
+#  endif /* CRAY */
+
+# endif /* no alloca */
+#endif /* not GCC version 2 */
diff --git a/mailbox/alloca_.h b/mailbox/alloca_.h
new file mode 100644
index 0000000..799037c
--- /dev/null
+++ b/mailbox/alloca_.h
@@ -0,0 +1,52 @@
+/* Memory allocation on the stack.
+
+   Copyright (C) 1995, 1999, 2001, 2002, 2003, 2004 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+   USA.  */
+
+/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
+   means there is a real alloca function.  */
+#ifndef _GNULIB_ALLOCA_H
+# define _GNULIB_ALLOCA_H
+
+/* alloca (N) returns a pointer to N bytes of memory
+   allocated on the stack, which will last until the function returns.
+   Use of alloca should be avoided:
+     - inside arguments of function calls - undefined behaviour,
+     - in inline functions - the allocation may actually last until the
+       calling function returns,
+     - for huge N (say, N >= 65536) - you never know how large (or small)
+       the stack is, and when the stack cannot fulfill the memory allocation
+       request, the program just crashes.
+ */
+
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+#elif defined _AIX
+# define alloca __alloca
+#elif defined _MSC_VER
+# include <malloc.h>
+# define alloca _alloca
+#else
+# include <stddef.h>
+# ifdef  __cplusplus
+extern "C"
+# endif
+void *alloca (size_t);
+#endif
+
+#endif /* _GNULIB_ALLOCA_H */
diff --git a/mailbox/asnprintf.c b/mailbox/asnprintf.c
new file mode 100644
index 0000000..4881a92
--- /dev/null
+++ b/mailbox/asnprintf.c
@@ -0,0 +1,37 @@
+/* Formatted output to strings.
+   Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include "vasnprintf.h"
+
+#include <stdarg.h>
+
+char *
+asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
+{
+  va_list args;
+  char *result;
+
+  va_start (args, format);
+  result = vasnprintf (resultbuf, lengthp, format, args);
+  va_end (args);
+  return result;
+}
diff --git a/mailbox/getndelim2.c b/mailbox/getndelim2.c
new file mode 100644
index 0000000..aef9780
--- /dev/null
+++ b/mailbox/getndelim2.c
@@ -0,0 +1,155 @@
+/* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
+   with bounded memory allocation.
+
+   Copyright (C) 1993, 1996, 1997, 1998, 2000, 2003, 2004 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Originally written by Jan Brittenson, bson@gnu.ai.mit.edu.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "getndelim2.h"
+
+#include <stdlib.h>
+#include <stddef.h>
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+#include <limits.h>
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifndef PTRDIFF_MAX
+# define PTRDIFF_MAX ((ptrdiff_t) (SIZE_MAX / 2))
+#endif
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t) -1)
+#endif
+#ifndef SSIZE_MAX
+# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
+#endif
+
+/* The maximum value that getndelim2 can return without suffering from
+   overflow problems, either internally (because of pointer
+   subtraction overflow) or due to the API (because of ssize_t).  */
+#define GETNDELIM2_MAXIMUM (PTRDIFF_MAX < SSIZE_MAX ? PTRDIFF_MAX : SSIZE_MAX)
+
+/* Try to add at least this many bytes when extending the buffer.
+   MIN_CHUNK must be no greater than GETNDELIM2_MAXIMUM.  */
+#define MIN_CHUNK 64
+
+ssize_t
+getndelim2 (char **lineptr, size_t *linesize, size_t offset, size_t nmax,
+            int delim1, int delim2, FILE *stream)
+{
+  size_t nbytes_avail;		/* Allocated but unused bytes in *LINEPTR.  */
+  char *read_pos;		/* Where we're reading into *LINEPTR. */
+  ssize_t bytes_stored = -1;
+  char *ptr = *lineptr;
+  size_t size = *linesize;
+
+  if (!ptr)
+    {
+      size = nmax < MIN_CHUNK ? nmax : MIN_CHUNK;
+      ptr = malloc (size);
+      if (!ptr)
+	return -1;
+    }
+
+  if (size < offset)
+    goto done;
+
+  nbytes_avail = size - offset;
+  read_pos = ptr + offset;
+
+  if (nbytes_avail == 0 && nmax <= size)
+    goto done;
+
+  for (;;)
+    {
+      /* Here always ptr + size == read_pos + nbytes_avail.  */
+
+      int c;
+
+      /* We always want at least one byte left in the buffer, since we
+	 always (unless we get an error while reading the first byte)
+	 NUL-terminate the line buffer.  */
+
+      if (nbytes_avail < 2 && size < nmax)
+	{
+	  size_t newsize = size < MIN_CHUNK ? size + MIN_CHUNK : 2 * size;
+	  char *newptr;
+
+	  if (! (size < newsize && newsize <= nmax))
+	    newsize = nmax;
+
+	  if (GETNDELIM2_MAXIMUM < newsize - offset)
+	    {
+	      size_t newsizemax = offset + GETNDELIM2_MAXIMUM + 1;
+	      if (size == newsizemax)
+		goto done;
+	      newsize = newsizemax;
+	    }
+
+	  nbytes_avail = newsize - (read_pos - ptr);
+	  newptr = realloc (ptr, newsize);
+	  if (!newptr)
+	    goto done;
+	  ptr = newptr;
+	  size = newsize;
+	  read_pos = size - nbytes_avail + ptr;
+	}
+
+      c = getc (stream);
+      if (c == EOF)
+	{
+	  /* Return partial line, if any.  */
+	  if (read_pos == ptr)
+	    goto done;
+	  else
+	    break;
+	}
+
+      if (nbytes_avail >= 2)
+	{
+	  *read_pos++ = c;
+	  nbytes_avail--;
+	}
+
+      if (c == delim1 || c == delim2)
+	/* Return the line.  */
+	break;
+    }
+
+  /* Done - NUL terminate and return the number of bytes read.
+     At this point we know that nbytes_avail >= 1.  */
+  *read_pos = '\0';
+
+  bytes_stored = read_pos - (ptr + offset);
+
+ done:
+  *lineptr = ptr;
+  *linesize = size;
+  return bytes_stored;
+}
diff --git a/mailbox/getndelim2.h b/mailbox/getndelim2.h
new file mode 100644
index 0000000..39f80cb
--- /dev/null
+++ b/mailbox/getndelim2.h
@@ -0,0 +1,43 @@
+/* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
+   with bounded memory allocation.
+
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef GETNDELIM2_H
+#define GETNDELIM2_H 1
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#define GETNLINE_NO_LIMIT ((size_t) -1)
+
+/* Read into a buffer *LINEPTR returned from malloc (or NULL),
+   pointing to *LINESIZE bytes of space.  Store the input bytes
+   starting at *LINEPTR + OFFSET, and null-terminate them.  Reallocate
+   the buffer as necessary, but if NMAX is not GETNLINE_NO_LIMIT
+   then do not allocate more than NMAX bytes; if the line is longer
+   than that, read and discard the extra bytes.  Stop reading after
+   after the first occurrence of DELIM1 or DELIM2, whichever comes
+   first; a delimiter equal to EOF stands for no delimiter.  Read the
+   input bytes from STREAM.
+   Return the number of bytes read and stored at *LINEPTR + OFFSET (not
+   including the NUL terminator), or -1 on error or EOF.  */
+extern ssize_t getndelim2 (char **lineptr, size_t *linesize, size_t offset,
+                           size_t nmax, int delim1, int delim2,
+                           FILE *stream);
+
+#endif /* GETNDELIM2_H */
diff --git a/mailbox/getopt_.h b/mailbox/getopt_.h
new file mode 100644
index 0000000..81612a5
--- /dev/null
+++ b/mailbox/getopt_.h
@@ -0,0 +1,227 @@
+/* Declarations for getopt.
+   Copyright (C) 1989-1994,1996-1999,2001,2003,2004
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _GETOPT_H
+
+#ifndef __need_getopt
+# define _GETOPT_H 1
+#endif
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+   identifier that prefixes the external functions and variables
+   defined in this header.  When this happens, include the
+   headers that might declare getopt so that they will not cause
+   confusion if included after this file.  Then systematically rename
+   identifiers so that they do not collide with the system functions
+   and variables.  Renaming avoids problems with some compilers and
+   linkers.  */
+#if defined __GETOPT_PREFIX && !defined __need_getopt
+# include <stdlib.h>
+# include <stdio.h>
+# if HAVE_UNISTD_H
+#  include <unistd.h>
+# endif
+# undef __need_getopt
+# undef getopt
+# undef getopt_long
+# undef getopt_long_only
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define __GETOPT_CONCAT(x, y) x ## y
+# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# define getopt __GETOPT_ID (getopt)
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
+#endif
+
+/* Standalone applications get correct prototypes for getopt_long and
+   getopt_long_only; they declare "char **argv".  libc uses prototypes
+   with "char *const *argv" that are incorrect because getopt_long and
+   getopt_long_only can permute argv; this is required for backward
+   compatibility (e.g., for LSB 2.0.1).
+
+   This used to be `#if defined __GETOPT_PREFIX && !defined __need_getopt',
+   but it caused redefinition warnings if both unistd.h and getopt.h were
+   included, since unistd.h includes getopt.h having previously defined
+   __need_getopt.
+
+   The only place where __getopt_argv_const is used is in definitions
+   of getopt_long and getopt_long_only below, but these are visible
+   only if __need_getopt is not defined, so it is quite safe to rewrite
+   the conditional as follows:
+*/
+#if !defined __need_getopt
+# if defined __GETOPT_PREFIX
+#  define __getopt_argv_const /* empty */
+# else
+#  define __getopt_argv_const const
+# endif
+#endif
+
+/* If __GNU_LIBRARY__ is not already defined, either we are being used
+   standalone, or this is the first header included in the source file.
+   If we are being used with glibc, we need to include <features.h>, but
+   that does not exist if we are standalone.  So: if __GNU_LIBRARY__ is
+   not defined, include <ctype.h>, which will pull in <features.h> for us
+   if it's from glibc.  (Why ctype.h?  It's guaranteed to exist and it
+   doesn't flood the namespace with stuff the way some other headers do.)  */
+#if !defined __GNU_LIBRARY__
+# include <ctype.h>
+#endif
+
+#ifndef __THROW
+# ifndef __GNUC_PREREQ
+#  define __GNUC_PREREQ(maj, min) (0)
+# endif
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+#  define __THROW	throw ()
+# else
+#  define __THROW
+# endif
+#endif
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+#ifndef __need_getopt
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+  const char *name;
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+# define no_argument		0
+# define required_argument	1
+# define optional_argument	2
+#endif	/* need getopt */
+
+
+/* Get definitions and prototypes for functions to process the
+   arguments in ARGV (ARGC of them, minus the program name) for
+   options given in OPTS.
+
+   Return the option character from OPTS just read.  Return -1 when
+   there are no more options.  For unrecognized options, or options
+   missing arguments, `optopt' is set to the option letter, and '?' is
+   returned.
+
+   The OPTS string is a list of characters which are recognized option
+   letters, optionally followed by colons, specifying that that letter
+   takes an argument, to be placed in `optarg'.
+
+   If a letter in OPTS is followed by two colons, its argument is
+   optional.  This behavior is specific to the GNU `getopt'.
+
+   The argument `--' causes premature termination of argument
+   scanning, explicitly telling `getopt' that there are no more
+   options.
+
+   If OPTS begins with `--', then non-option arguments are treated as
+   arguments to the option '\0'.  This behavior is specific to the GNU
+   `getopt'.  */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+       __THROW;
+
+#ifndef __need_getopt
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+			const char *__shortopts,
+		        const struct option *__longopts, int *__longind)
+       __THROW;
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+			     const char *__shortopts,
+		             const struct option *__longopts, int *__longind)
+       __THROW;
+
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+/* Make sure we later can get all the definitions and declarations.  */
+#undef __need_getopt
+
+#endif /* getopt.h */
diff --git a/mailbox/getopt_int.h b/mailbox/getopt_int.h
new file mode 100644
index 0000000..e5bc3f2
--- /dev/null
+++ b/mailbox/getopt_int.h
@@ -0,0 +1,131 @@
+/* Internal declarations for getopt.
+   Copyright (C) 1989-1994,1996-1999,2001,2003,2004
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _GETOPT_INT_H
+#define _GETOPT_INT_H	1
+
+extern int _getopt_internal (int ___argc, char **___argv,
+			     const char *__shortopts,
+		             const struct option *__longopts, int *__longind,
+			     int __long_only, int __posixly_correct);
+
+
+/* Reentrant versions which can handle parsing multiple argument
+   vectors at the same time.  */
+
+/* Data type for reentrant functions.  */
+struct _getopt_data
+{
+  /* These have exactly the same meaning as the corresponding global
+     variables, except that they are used for the reentrant
+     versions of getopt.  */
+  int optind;
+  int opterr;
+  int optopt;
+  char *optarg;
+
+  /* Internal members.  */
+
+  /* True if the internal members have been initialized.  */
+  int __initialized;
+
+  /* The next char to be scanned in the option-element
+     in which the last option character we returned was found.
+     This allows us to pick up the scan where we left off.
+
+     If this is zero, or a null string, it means resume the scan
+     by advancing to the next ARGV-element.  */
+  char *__nextchar;
+
+  /* Describe how to deal with options that follow non-option ARGV-elements.
+
+     If the caller did not specify anything,
+     the default is REQUIRE_ORDER if the environment variable
+     POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+     REQUIRE_ORDER means don't recognize them as options;
+     stop option processing when the first non-option is seen.
+     This is what Unix does.
+     This mode of operation is selected by either setting the environment
+     variable POSIXLY_CORRECT, or using `+' as the first character
+     of the list of option characters, or by calling getopt.
+
+     PERMUTE is the default.  We permute the contents of ARGV as we
+     scan, so that eventually all the non-options are at the end.
+     This allows options to be given in any order, even with programs
+     that were not written to expect this.
+
+     RETURN_IN_ORDER is an option available to programs that were
+     written to expect options and other ARGV-elements in any order
+     and that care about the ordering of the two.  We describe each
+     non-option ARGV-element as if it were the argument of an option
+     with character code 1.  Using `-' as the first character of the
+     list of option characters selects this mode of operation.
+
+     The special argument `--' forces an end of option-scanning regardless
+     of the value of `ordering'.  In the case of RETURN_IN_ORDER, only
+     `--' can cause `getopt' to return -1 with `optind' != ARGC.  */
+
+  enum
+    {
+      REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+    } __ordering;
+
+  /* If the POSIXLY_CORRECT environment variable is set
+     or getopt was called.  */
+  int __posixly_correct;
+
+
+  /* Handle permutation of arguments.  */
+
+  /* Describe the part of ARGV that contains non-options that have
+     been skipped.  `first_nonopt' is the index in ARGV of the first
+     of them; `last_nonopt' is the index after the last of them.  */
+
+  int __first_nonopt;
+  int __last_nonopt;
+
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+  int __nonoption_flags_max_len;
+  int __nonoption_flags_len;
+# endif
+};
+
+/* The initializer is necessary to set OPTIND and OPTERR to their
+   default values and to clear the initialization flag.  */
+#define _GETOPT_DATA_INITIALIZER	{ 1, 1 }
+
+extern int _getopt_internal_r (int ___argc, char **___argv,
+			       const char *__shortopts,
+			       const struct option *__longopts, int *__longind,
+			       int __long_only, int __posixly_correct,
+			       struct _getopt_data *__data);
+
+extern int _getopt_long_r (int ___argc, char **___argv,
+			   const char *__shortopts,
+			   const struct option *__longopts, int *__longind,
+			   struct _getopt_data *__data);
+
+extern int _getopt_long_only_r (int ___argc, char **___argv,
+				const char *__shortopts,
+				const struct option *__longopts,
+				int *__longind,
+				struct _getopt_data *__data);
+
+#endif /* getopt_int.h */
diff --git a/mailbox/gettext.h b/mailbox/gettext.h
new file mode 100644
index 0000000..835732e
--- /dev/null
+++ b/mailbox/gettext.h
@@ -0,0 +1,68 @@
+/* Convenience header for conditional use of GNU <libintl.h>.
+   Copyright (C) 1995-1998, 2000-2002 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option.  */
+#if ENABLE_NLS
+
+/* Get declarations of GNU message catalog functions.  */
+# include <libintl.h>
+
+#else
+
+/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
+   chokes if dcgettext is defined as a macro.  So include it now, to make
+   later inclusions of <locale.h> a NOP.  We don't include <libintl.h>
+   as well because people using "gettext.h" will not include <libintl.h>,
+   and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
+   is OK.  */
+#if defined(__sun)
+# include <locale.h>
+#endif
+
+/* Disabled NLS.
+   The casts to 'const char *' serve the purpose of producing warnings
+   for invalid uses of the value returned from these functions.
+   On pre-ANSI systems without 'const', the config.h file is supposed to
+   contain "#define const".  */
+# define gettext(Msgid) ((const char *) (Msgid))
+# define dgettext(Domainname, Msgid) ((const char *) (Msgid))
+# define dcgettext(Domainname, Msgid, Category) ((const char *) (Msgid))
+# define ngettext(Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define textdomain(Domainname) ((const char *) (Domainname))
+# define bindtextdomain(Domainname, Dirname) ((const char *) (Dirname))
+# define bind_textdomain_codeset(Domainname, Codeset) ((const char *) (Codeset))
+
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+   extraction of messages, but does not call gettext().  The run-time
+   translation is done at a different place in the code.
+   The argument, String, should be a literal string.  Concatenated strings
+   and other string expressions won't work.
+   The macro's expansion is not parenthesized, so that it is suitable as
+   initializer for static 'char[]' or 'const char[]' variables.  */
+#define gettext_noop(String) String
+
+#endif /* _LIBGETTEXT_H */
diff --git a/mailbox/mempcpy.c b/mailbox/mempcpy.c
new file mode 100644
index 0000000..3ac42af
--- /dev/null
+++ b/mailbox/mempcpy.c
@@ -0,0 +1,29 @@
+/* Copy memory area and return pointer after last written byte.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Specification.  */
+#include "mempcpy.h"
+
+#include <string.h>
+
+/* Copy N bytes of SRC to DEST, return pointer to bytes after the
+   last written byte.  */
+void *
+mempcpy (void *dest, const void *src, size_t n)
+{
+  return (char *) memcpy (dest, src, n) + n;
+}
diff --git a/mailbox/mempcpy.h b/mailbox/mempcpy.h
new file mode 100644
index 0000000..4cc7a50
--- /dev/null
+++ b/mailbox/mempcpy.h
@@ -0,0 +1,36 @@
+/* Copy memory area and return pointer after last written byte.
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef mempcpy
+
+# if HAVE_MEMPCPY
+
+/* Get mempcpy() declaration.  */
+#  include <string.h>
+
+# else
+
+/* Get size_t */
+#  include <stddef.h>
+
+/* Copy N bytes of SRC to DEST, return pointer to bytes after the
+   last written byte.  */
+extern void *mempcpy (void *dest, const void *src, size_t n);
+
+# endif
+
+#endif
diff --git a/mailbox/minmax.h b/mailbox/minmax.h
new file mode 100644
index 0000000..0e50510
--- /dev/null
+++ b/mailbox/minmax.h
@@ -0,0 +1,53 @@
+/* MIN, MAX macros.
+   Copyright (C) 1995, 1998, 2001, 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _MINMAX_H
+#define _MINMAX_H
+
+/* Note: MIN, MAX are also defined in <sys/param.h> on some systems
+   (glibc, IRIX, HP-UX, OSF/1).  Therefore you might get warnings about
+   MIN, MAX macro redefinitions on some systems; the workaround is to
+   #include this file as the last one among the #include list.  */
+
+/* Before we define the following symbols we get the <limits.h> file
+   since otherwise we get redefinitions on some systems.  */
+#include <limits.h>
+
+/* Note: MIN and MAX should be used with two arguments of the
+   same type.  They might not return the minimum and maximum of their two
+   arguments, if the arguments have different types or have unusual
+   floating-point values.  For example, on a typical host with 32-bit 'int',
+   64-bit 'long long', and 64-bit IEEE 754 'double' types:
+
+     MAX (-1, 2147483648) returns 4294967295.
+     MAX (9007199254740992.0, 9007199254740993) returns 9007199254740992.0.
+     MAX (NaN, 0.0) returns 0.0.
+     MAX (+0.0, -0.0) returns -0.0.
+
+   and in each case the answer is in some sense bogus.  */
+
+/* MAX(a,b) returns the maximum of A and B.  */
+#ifndef MAX
+# define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+/* MIN(a,b) returns the minimum of A and B.  */
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#endif /* _MINMAX_H */
diff --git a/mailbox/printf-args.c b/mailbox/printf-args.c
new file mode 100644
index 0000000..926ae8f
--- /dev/null
+++ b/mailbox/printf-args.c
@@ -0,0 +1,118 @@
+/* Decomposed printf argument list.
+   Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include "printf-args.h"
+
+#ifdef STATIC
+STATIC
+#endif
+int
+printf_fetchargs (va_list args, arguments *a)
+{
+  size_t i;
+  argument *ap;
+
+  for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
+    switch (ap->type)
+      {
+      case TYPE_SCHAR:
+	ap->a.a_schar = va_arg (args, /*signed char*/ int);
+	break;
+      case TYPE_UCHAR:
+	ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
+	break;
+      case TYPE_SHORT:
+	ap->a.a_short = va_arg (args, /*short*/ int);
+	break;
+      case TYPE_USHORT:
+	ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
+	break;
+      case TYPE_INT:
+	ap->a.a_int = va_arg (args, int);
+	break;
+      case TYPE_UINT:
+	ap->a.a_uint = va_arg (args, unsigned int);
+	break;
+      case TYPE_LONGINT:
+	ap->a.a_longint = va_arg (args, long int);
+	break;
+      case TYPE_ULONGINT:
+	ap->a.a_ulongint = va_arg (args, unsigned long int);
+	break;
+#ifdef HAVE_LONG_LONG
+      case TYPE_LONGLONGINT:
+	ap->a.a_longlongint = va_arg (args, long long int);
+	break;
+      case TYPE_ULONGLONGINT:
+	ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
+	break;
+#endif
+      case TYPE_DOUBLE:
+	ap->a.a_double = va_arg (args, double);
+	break;
+#ifdef HAVE_LONG_DOUBLE
+      case TYPE_LONGDOUBLE:
+	ap->a.a_longdouble = va_arg (args, long double);
+	break;
+#endif
+      case TYPE_CHAR:
+	ap->a.a_char = va_arg (args, int);
+	break;
+#ifdef HAVE_WINT_T
+      case TYPE_WIDE_CHAR:
+	ap->a.a_wide_char = va_arg (args, wint_t);
+	break;
+#endif
+      case TYPE_STRING:
+	ap->a.a_string = va_arg (args, const char *);
+	break;
+#ifdef HAVE_WCHAR_T
+      case TYPE_WIDE_STRING:
+	ap->a.a_wide_string = va_arg (args, const wchar_t *);
+	break;
+#endif
+      case TYPE_POINTER:
+	ap->a.a_pointer = va_arg (args, void *);
+	break;
+      case TYPE_COUNT_SCHAR_POINTER:
+	ap->a.a_count_schar_pointer = va_arg (args, signed char *);
+	break;
+      case TYPE_COUNT_SHORT_POINTER:
+	ap->a.a_count_short_pointer = va_arg (args, short *);
+	break;
+      case TYPE_COUNT_INT_POINTER:
+	ap->a.a_count_int_pointer = va_arg (args, int *);
+	break;
+      case TYPE_COUNT_LONGINT_POINTER:
+	ap->a.a_count_longint_pointer = va_arg (args, long int *);
+	break;
+#ifdef HAVE_LONG_LONG
+      case TYPE_COUNT_LONGLONGINT_POINTER:
+	ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
+	break;
+#endif
+      default:
+	/* Unknown type.  */
+	return -1;
+      }
+  return 0;
+}
diff --git a/mailbox/printf-args.h b/mailbox/printf-args.h
new file mode 100644
index 0000000..4b75c72
--- /dev/null
+++ b/mailbox/printf-args.h
@@ -0,0 +1,136 @@
+/* Decomposed printf argument list.
+   Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _PRINTF_ARGS_H
+#define _PRINTF_ARGS_H
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get wchar_t.  */
+#ifdef HAVE_WCHAR_T
+# include <stddef.h>
+#endif
+
+/* Get wint_t.  */
+#ifdef HAVE_WINT_T
+# include <wchar.h>
+#endif
+
+/* Get va_list.  */
+#include <stdarg.h>
+
+
+/* Argument types */
+typedef enum
+{
+  TYPE_NONE,
+  TYPE_SCHAR,
+  TYPE_UCHAR,
+  TYPE_SHORT,
+  TYPE_USHORT,
+  TYPE_INT,
+  TYPE_UINT,
+  TYPE_LONGINT,
+  TYPE_ULONGINT,
+#ifdef HAVE_LONG_LONG
+  TYPE_LONGLONGINT,
+  TYPE_ULONGLONGINT,
+#endif
+  TYPE_DOUBLE,
+#ifdef HAVE_LONG_DOUBLE
+  TYPE_LONGDOUBLE,
+#endif
+  TYPE_CHAR,
+#ifdef HAVE_WINT_T
+  TYPE_WIDE_CHAR,
+#endif
+  TYPE_STRING,
+#ifdef HAVE_WCHAR_T
+  TYPE_WIDE_STRING,
+#endif
+  TYPE_POINTER,
+  TYPE_COUNT_SCHAR_POINTER,
+  TYPE_COUNT_SHORT_POINTER,
+  TYPE_COUNT_INT_POINTER,
+  TYPE_COUNT_LONGINT_POINTER
+#ifdef HAVE_LONG_LONG
+, TYPE_COUNT_LONGLONGINT_POINTER
+#endif
+} arg_type;
+
+/* Polymorphic argument */
+typedef struct
+{
+  arg_type type;
+  union
+  {
+    signed char			a_schar;
+    unsigned char		a_uchar;
+    short			a_short;
+    unsigned short		a_ushort;
+    int				a_int;
+    unsigned int		a_uint;
+    long int			a_longint;
+    unsigned long int		a_ulongint;
+#ifdef HAVE_LONG_LONG
+    long long int		a_longlongint;
+    unsigned long long int	a_ulonglongint;
+#endif
+    float			a_float;
+    double			a_double;
+#ifdef HAVE_LONG_DOUBLE
+    long double			a_longdouble;
+#endif
+    int				a_char;
+#ifdef HAVE_WINT_T
+    wint_t			a_wide_char;
+#endif
+    const char*			a_string;
+#ifdef HAVE_WCHAR_T
+    const wchar_t*		a_wide_string;
+#endif
+    void*			a_pointer;
+    signed char *		a_count_schar_pointer;
+    short *			a_count_short_pointer;
+    int *			a_count_int_pointer;
+    long int *			a_count_longint_pointer;
+#ifdef HAVE_LONG_LONG
+    long long int *		a_count_longlongint_pointer;
+#endif
+  }
+  a;
+}
+argument;
+
+typedef struct
+{
+  size_t count;
+  argument *arg;
+}
+arguments;
+
+
+/* Fetch the arguments, putting them into a. */
+#ifdef STATIC
+STATIC
+#else
+extern
+#endif
+int printf_fetchargs (va_list args, arguments *a);
+
+#endif /* _PRINTF_ARGS_H */
diff --git a/mailbox/printf-parse.c b/mailbox/printf-parse.c
new file mode 100644
index 0000000..b386b7b
--- /dev/null
+++ b/mailbox/printf-parse.c
@@ -0,0 +1,536 @@
+/* Formatted output to strings.
+   Copyright (C) 1999-2000, 2002-2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#if WIDE_CHAR_VERSION
+# include "wprintf-parse.h"
+#else
+# include "printf-parse.h"
+#endif
+
+/* Get size_t, NULL.  */
+#include <stddef.h>
+
+/* Get intmax_t.  */
+#if HAVE_STDINT_H_WITH_UINTMAX
+# include <stdint.h>
+#endif
+#if HAVE_INTTYPES_H_WITH_UINTMAX
+# include <inttypes.h>
+#endif
+
+/* malloc(), realloc(), free().  */
+#include <stdlib.h>
+
+/* Checked size_t computations.  */
+#include "xsize.h"
+
+#if WIDE_CHAR_VERSION
+# define PRINTF_PARSE wprintf_parse
+# define CHAR_T wchar_t
+# define DIRECTIVE wchar_t_directive
+# define DIRECTIVES wchar_t_directives
+#else
+# define PRINTF_PARSE printf_parse
+# define CHAR_T char
+# define DIRECTIVE char_directive
+# define DIRECTIVES char_directives
+#endif
+
+#ifdef STATIC
+STATIC
+#endif
+int
+PRINTF_PARSE (const CHAR_T *format, DIRECTIVES *d, arguments *a)
+{
+  const CHAR_T *cp = format;		/* pointer into format */
+  size_t arg_posn = 0;		/* number of regular arguments consumed */
+  size_t d_allocated;			/* allocated elements of d->dir */
+  size_t a_allocated;			/* allocated elements of a->arg */
+  size_t max_width_length = 0;
+  size_t max_precision_length = 0;
+
+  d->count = 0;
+  d_allocated = 1;
+  d->dir = malloc (d_allocated * sizeof (DIRECTIVE));
+  if (d->dir == NULL)
+    /* Out of memory.  */
+    return -1;
+
+  a->count = 0;
+  a_allocated = 0;
+  a->arg = NULL;
+
+#define REGISTER_ARG(_index_,_type_) \
+  {									\
+    size_t n = (_index_);						\
+    if (n >= a_allocated)						\
+      {									\
+	size_t memory_size;						\
+	argument *memory;						\
+									\
+	a_allocated = xtimes (a_allocated, 2);				\
+	if (a_allocated <= n)						\
+	  a_allocated = xsum (n, 1);					\
+	memory_size = xtimes (a_allocated, sizeof (argument));		\
+	if (size_overflow_p (memory_size))				\
+	  /* Overflow, would lead to out of memory.  */			\
+	  goto error;							\
+	memory = (a->arg						\
+		  ? realloc (a->arg, memory_size)			\
+		  : malloc (memory_size));				\
+	if (memory == NULL)						\
+	  /* Out of memory.  */						\
+	  goto error;							\
+	a->arg = memory;						\
+      }									\
+    while (a->count <= n)						\
+      a->arg[a->count++].type = TYPE_NONE;				\
+    if (a->arg[n].type == TYPE_NONE)					\
+      a->arg[n].type = (_type_);					\
+    else if (a->arg[n].type != (_type_))				\
+      /* Ambiguous type for positional argument.  */			\
+      goto error;							\
+  }
+
+  while (*cp != '\0')
+    {
+      CHAR_T c = *cp++;
+      if (c == '%')
+	{
+	  size_t arg_index = ARG_NONE;
+	  DIRECTIVE *dp = &d->dir[d->count];/* pointer to next directive */
+
+	  /* Initialize the next directive.  */
+	  dp->dir_start = cp - 1;
+	  dp->flags = 0;
+	  dp->width_start = NULL;
+	  dp->width_end = NULL;
+	  dp->width_arg_index = ARG_NONE;
+	  dp->precision_start = NULL;
+	  dp->precision_end = NULL;
+	  dp->precision_arg_index = ARG_NONE;
+	  dp->arg_index = ARG_NONE;
+
+	  /* Test for positional argument.  */
+	  if (*cp >= '0' && *cp <= '9')
+	    {
+	      const CHAR_T *np;
+
+	      for (np = cp; *np >= '0' && *np <= '9'; np++)
+		;
+	      if (*np == '$')
+		{
+		  size_t n = 0;
+
+		  for (np = cp; *np >= '0' && *np <= '9'; np++)
+		    n = xsum (xtimes (n, 10), *np - '0');
+		  if (n == 0)
+		    /* Positional argument 0.  */
+		    goto error;
+		  if (size_overflow_p (n))
+		    /* n too large, would lead to out of memory later.  */
+		    goto error;
+		  arg_index = n - 1;
+		  cp = np + 1;
+		}
+	    }
+
+	  /* Read the flags.  */
+	  for (;;)
+	    {
+	      if (*cp == '\'')
+		{
+		  dp->flags |= FLAG_GROUP;
+		  cp++;
+		}
+	      else if (*cp == '-')
+		{
+		  dp->flags |= FLAG_LEFT;
+		  cp++;
+		}
+	      else if (*cp == '+')
+		{
+		  dp->flags |= FLAG_SHOWSIGN;
+		  cp++;
+		}
+	      else if (*cp == ' ')
+		{
+		  dp->flags |= FLAG_SPACE;
+		  cp++;
+		}
+	      else if (*cp == '#')
+		{
+		  dp->flags |= FLAG_ALT;
+		  cp++;
+		}
+	      else if (*cp == '0')
+		{
+		  dp->flags |= FLAG_ZERO;
+		  cp++;
+		}
+	      else
+		break;
+	    }
+
+	  /* Parse the field width.  */
+	  if (*cp == '*')
+	    {
+	      dp->width_start = cp;
+	      cp++;
+	      dp->width_end = cp;
+	      if (max_width_length < 1)
+		max_width_length = 1;
+
+	      /* Test for positional argument.  */
+	      if (*cp >= '0' && *cp <= '9')
+		{
+		  const CHAR_T *np;
+
+		  for (np = cp; *np >= '0' && *np <= '9'; np++)
+		    ;
+		  if (*np == '$')
+		    {
+		      size_t n = 0;
+
+		      for (np = cp; *np >= '0' && *np <= '9'; np++)
+			n = xsum (xtimes (n, 10), *np - '0');
+		      if (n == 0)
+			/* Positional argument 0.  */
+			goto error;
+		      if (size_overflow_p (n))
+			/* n too large, would lead to out of memory later.  */
+			goto error;
+		      dp->width_arg_index = n - 1;
+		      cp = np + 1;
+		    }
+		}
+	      if (dp->width_arg_index == ARG_NONE)
+		{
+		  dp->width_arg_index = arg_posn++;
+		  if (dp->width_arg_index == ARG_NONE)
+		    /* arg_posn wrapped around.  */
+		    goto error;
+		}
+	      REGISTER_ARG (dp->width_arg_index, TYPE_INT);
+	    }
+	  else if (*cp >= '0' && *cp <= '9')
+	    {
+	      size_t width_length;
+
+	      dp->width_start = cp;
+	      for (; *cp >= '0' && *cp <= '9'; cp++)
+		;
+	      dp->width_end = cp;
+	      width_length = dp->width_end - dp->width_start;
+	      if (max_width_length < width_length)
+		max_width_length = width_length;
+	    }
+
+	  /* Parse the precision.  */
+	  if (*cp == '.')
+	    {
+	      cp++;
+	      if (*cp == '*')
+		{
+		  dp->precision_start = cp - 1;
+		  cp++;
+		  dp->precision_end = cp;
+		  if (max_precision_length < 2)
+		    max_precision_length = 2;
+
+		  /* Test for positional argument.  */
+		  if (*cp >= '0' && *cp <= '9')
+		    {
+		      const CHAR_T *np;
+
+		      for (np = cp; *np >= '0' && *np <= '9'; np++)
+			;
+		      if (*np == '$')
+			{
+			  size_t n = 0;
+
+			  for (np = cp; *np >= '0' && *np <= '9'; np++)
+			    n = xsum (xtimes (n, 10), *np - '0');
+			  if (n == 0)
+			    /* Positional argument 0.  */
+			    goto error;
+			  if (size_overflow_p (n))
+			    /* n too large, would lead to out of memory
+			       later.  */
+			    goto error;
+			  dp->precision_arg_index = n - 1;
+			  cp = np + 1;
+			}
+		    }
+		  if (dp->precision_arg_index == ARG_NONE)
+		    {
+		      dp->precision_arg_index = arg_posn++;
+		      if (dp->precision_arg_index == ARG_NONE)
+			/* arg_posn wrapped around.  */
+			goto error;
+		    }
+		  REGISTER_ARG (dp->precision_arg_index, TYPE_INT);
+		}
+	      else
+		{
+		  size_t precision_length;
+
+		  dp->precision_start = cp - 1;
+		  for (; *cp >= '0' && *cp <= '9'; cp++)
+		    ;
+		  dp->precision_end = cp;
+		  precision_length = dp->precision_end - dp->precision_start;
+		  if (max_precision_length < precision_length)
+		    max_precision_length = precision_length;
+		}
+	    }
+
+	  {
+	    arg_type type;
+
+	    /* Parse argument type/size specifiers.  */
+	    {
+	      int flags = 0;
+
+	      for (;;)
+		{
+		  if (*cp == 'h')
+		    {
+		      flags |= (1 << (flags & 1));
+		      cp++;
+		    }
+		  else if (*cp == 'L')
+		    {
+		      flags |= 4;
+		      cp++;
+		    }
+		  else if (*cp == 'l')
+		    {
+		      flags += 8;
+		      cp++;
+		    }
+#ifdef HAVE_INTMAX_T
+		  else if (*cp == 'j')
+		    {
+		      if (sizeof (intmax_t) > sizeof (long))
+			{
+			  /* intmax_t = long long */
+			  flags += 16;
+			}
+		      else if (sizeof (intmax_t) > sizeof (int))
+			{
+			  /* intmax_t = long */
+			  flags += 8;
+			}
+		      cp++;
+		    }
+#endif
+		  else if (*cp == 'z' || *cp == 'Z')
+		    {
+		      /* 'z' is standardized in ISO C 99, but glibc uses 'Z'
+			 because the warning facility in gcc-2.95.2 understands
+			 only 'Z' (see gcc-2.95.2/gcc/c-common.c:1784).  */
+		      if (sizeof (size_t) > sizeof (long))
+			{
+			  /* size_t = long long */
+			  flags += 16;
+			}
+		      else if (sizeof (size_t) > sizeof (int))
+			{
+			  /* size_t = long */
+			  flags += 8;
+			}
+		      cp++;
+		    }
+		  else if (*cp == 't')
+		    {
+		      if (sizeof (ptrdiff_t) > sizeof (long))
+			{
+			  /* ptrdiff_t = long long */
+			  flags += 16;
+			}
+		      else if (sizeof (ptrdiff_t) > sizeof (int))
+			{
+			  /* ptrdiff_t = long */
+			  flags += 8;
+			}
+		      cp++;
+		    }
+		  else
+		    break;
+		}
+
+	      /* Read the conversion character.  */
+	      c = *cp++;
+	      switch (c)
+		{
+		case 'd': case 'i':
+#ifdef HAVE_LONG_LONG
+		  if (flags >= 16 || (flags & 4))
+		    type = TYPE_LONGLONGINT;
+		  else
+#endif
+		  if (flags >= 8)
+		    type = TYPE_LONGINT;
+		  else if (flags & 2)
+		    type = TYPE_SCHAR;
+		  else if (flags & 1)
+		    type = TYPE_SHORT;
+		  else
+		    type = TYPE_INT;
+		  break;
+		case 'o': case 'u': case 'x': case 'X':
+#ifdef HAVE_LONG_LONG
+		  if (flags >= 16 || (flags & 4))
+		    type = TYPE_ULONGLONGINT;
+		  else
+#endif
+		  if (flags >= 8)
+		    type = TYPE_ULONGINT;
+		  else if (flags & 2)
+		    type = TYPE_UCHAR;
+		  else if (flags & 1)
+		    type = TYPE_USHORT;
+		  else
+		    type = TYPE_UINT;
+		  break;
+		case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
+		case 'a': case 'A':
+#ifdef HAVE_LONG_DOUBLE
+		  if (flags >= 16 || (flags & 4))
+		    type = TYPE_LONGDOUBLE;
+		  else
+#endif
+		  type = TYPE_DOUBLE;
+		  break;
+		case 'c':
+		  if (flags >= 8)
+#ifdef HAVE_WINT_T
+		    type = TYPE_WIDE_CHAR;
+#else
+		    goto error;
+#endif
+		  else
+		    type = TYPE_CHAR;
+		  break;
+#ifdef HAVE_WINT_T
+		case 'C':
+		  type = TYPE_WIDE_CHAR;
+		  c = 'c';
+		  break;
+#endif
+		case 's':
+		  if (flags >= 8)
+#ifdef HAVE_WCHAR_T
+		    type = TYPE_WIDE_STRING;
+#else
+		    goto error;
+#endif
+		  else
+		    type = TYPE_STRING;
+		  break;
+#ifdef HAVE_WCHAR_T
+		case 'S':
+		  type = TYPE_WIDE_STRING;
+		  c = 's';
+		  break;
+#endif
+		case 'p':
+		  type = TYPE_POINTER;
+		  break;
+		case 'n':
+#ifdef HAVE_LONG_LONG
+		  if (flags >= 16 || (flags & 4))
+		    type = TYPE_COUNT_LONGLONGINT_POINTER;
+		  else
+#endif
+		  if (flags >= 8)
+		    type = TYPE_COUNT_LONGINT_POINTER;
+		  else if (flags & 2)
+		    type = TYPE_COUNT_SCHAR_POINTER;
+		  else if (flags & 1)
+		    type = TYPE_COUNT_SHORT_POINTER;
+		  else
+		    type = TYPE_COUNT_INT_POINTER;
+		  break;
+		case '%':
+		  type = TYPE_NONE;
+		  break;
+		default:
+		  /* Unknown conversion character.  */
+		  goto error;
+		}
+	    }
+
+	    if (type != TYPE_NONE)
+	      {
+		dp->arg_index = arg_index;
+		if (dp->arg_index == ARG_NONE)
+		  {
+		    dp->arg_index = arg_posn++;
+		    if (dp->arg_index == ARG_NONE)
+		      /* arg_posn wrapped around.  */
+		      goto error;
+		  }
+		REGISTER_ARG (dp->arg_index, type);
+	      }
+	    dp->conversion = c;
+	    dp->dir_end = cp;
+	  }
+
+	  d->count++;
+	  if (d->count >= d_allocated)
+	    {
+	      size_t memory_size;
+	      DIRECTIVE *memory;
+
+	      d_allocated = xtimes (d_allocated, 2);
+	      memory_size = xtimes (d_allocated, sizeof (DIRECTIVE));
+	      if (size_overflow_p (memory_size))
+		/* Overflow, would lead to out of memory.  */
+		goto error;
+	      memory = realloc (d->dir, memory_size);
+	      if (memory == NULL)
+		/* Out of memory.  */
+		goto error;
+	      d->dir = memory;
+	    }
+	}
+    }
+  d->dir[d->count].dir_start = cp;
+
+  d->max_width_length = max_width_length;
+  d->max_precision_length = max_precision_length;
+  return 0;
+
+error:
+  if (a->arg)
+    free (a->arg);
+  if (d->dir)
+    free (d->dir);
+  return -1;
+}
+
+#undef DIRECTIVES
+#undef DIRECTIVE
+#undef CHAR_T
+#undef PRINTF_PARSE
diff --git a/mailbox/printf-parse.h b/mailbox/printf-parse.h
new file mode 100644
index 0000000..f3f4586
--- /dev/null
+++ b/mailbox/printf-parse.h
@@ -0,0 +1,74 @@
+/* Parse printf format string.
+   Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _PRINTF_PARSE_H
+#define _PRINTF_PARSE_H
+
+#include "printf-args.h"
+
+
+/* Flags */
+#define FLAG_GROUP	 1	/* ' flag */
+#define FLAG_LEFT	 2	/* - flag */
+#define FLAG_SHOWSIGN	 4	/* + flag */
+#define FLAG_SPACE	 8	/* space flag */
+#define FLAG_ALT	16	/* # flag */
+#define FLAG_ZERO	32
+
+/* arg_index value indicating that no argument is consumed.  */
+#define ARG_NONE	(~(size_t)0)
+
+/* A parsed directive.  */
+typedef struct
+{
+  const char* dir_start;
+  const char* dir_end;
+  int flags;
+  const char* width_start;
+  const char* width_end;
+  size_t width_arg_index;
+  const char* precision_start;
+  const char* precision_end;
+  size_t precision_arg_index;
+  char conversion; /* d i o u x X f e E g G c s p n U % but not C S */
+  size_t arg_index;
+}
+char_directive;
+
+/* A parsed format string.  */
+typedef struct
+{
+  size_t count;
+  char_directive *dir;
+  size_t max_width_length;
+  size_t max_precision_length;
+}
+char_directives;
+
+
+/* Parses the format string.  Fills in the number N of directives, and fills
+   in directives[0], ..., directives[N-1], and sets directives[N].dir_start
+   to the end of the format string.  Also fills in the arg_type fields of the
+   arguments and the needed count of arguments.  */
+#ifdef STATIC
+STATIC
+#else
+extern
+#endif
+int printf_parse (const char *format, char_directives *d, arguments *a);
+
+#endif /* _PRINTF_PARSE_H */
diff --git a/mailbox/regex.h b/mailbox/regex.h
new file mode 100644
index 0000000..b4bbc01
--- /dev/null
+++ b/mailbox/regex.h
@@ -0,0 +1,556 @@
+/* Definitions for data structures and routines for the regular
+   expression library.
+   Copyright (C) 1985,1989-93,1995-98,2000,2001,2002,2003
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _REGEX_H
+#define _REGEX_H 1
+
+#include <sys/types.h>
+
+/* Allow the use in C++ code.  */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* POSIX says that <sys/types.h> must be included (by the caller) before
+   <regex.h>.  */
+
+#if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS
+/* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it
+   should be there.  */
+# include <stddef.h>
+#endif
+
+/* The following two types have to be signed and unsigned integer type
+   wide enough to hold a value of a pointer.  For most ANSI compilers
+   ptrdiff_t and size_t should be likely OK.  Still size of these two
+   types is 2 for Microsoft C.  Ugh... */
+typedef long int s_reg_t;
+typedef unsigned long int active_reg_t;
+
+/* The following bits are used to determine the regexp syntax we
+   recognize.  The set/not-set meanings are chosen so that Emacs syntax
+   remains the value 0.  The bits are given in alphabetical order, and
+   the definitions shifted by one from the previous bit; thus, when we
+   add or remove a bit, only one other definition need change.  */
+typedef unsigned long int reg_syntax_t;
+
+/* If this bit is not set, then \ inside a bracket expression is literal.
+   If set, then such a \ quotes the following character.  */
+#define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1)
+
+/* If this bit is not set, then + and ? are operators, and \+ and \? are
+     literals.
+   If set, then \+ and \? are operators and + and ? are literals.  */
+#define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1)
+
+/* If this bit is set, then character classes are supported.  They are:
+     [:alpha:], [:upper:], [:lower:],  [:digit:], [:alnum:], [:xdigit:],
+     [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:].
+   If not set, then character classes are not supported.  */
+#define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1)
+
+/* If this bit is set, then ^ and $ are always anchors (outside bracket
+     expressions, of course).
+   If this bit is not set, then it depends:
+        ^  is an anchor if it is at the beginning of a regular
+           expression or after an open-group or an alternation operator;
+        $  is an anchor if it is at the end of a regular expression, or
+           before a close-group or an alternation operator.
+
+   This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because
+   POSIX draft 11.2 says that * etc. in leading positions is undefined.
+   We already implemented a previous draft which made those constructs
+   invalid, though, so we haven't changed the code back.  */
+#define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1)
+
+/* If this bit is set, then special characters are always special
+     regardless of where they are in the pattern.
+   If this bit is not set, then special characters are special only in
+     some contexts; otherwise they are ordinary.  Specifically,
+     * + ? and intervals are only special when not after the beginning,
+     open-group, or alternation operator.  */
+#define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1)
+
+/* If this bit is set, then *, +, ?, and { cannot be first in an re or
+     immediately after an alternation or begin-group operator.  */
+#define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1)
+
+/* If this bit is set, then . matches newline.
+   If not set, then it doesn't.  */
+#define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1)
+
+/* If this bit is set, then . doesn't match NUL.
+   If not set, then it does.  */
+#define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1)
+
+/* If this bit is set, nonmatching lists [^...] do not match newline.
+   If not set, they do.  */
+#define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1)
+
+/* If this bit is set, either \{...\} or {...} defines an
+     interval, depending on RE_NO_BK_BRACES.
+   If not set, \{, \}, {, and } are literals.  */
+#define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1)
+
+/* If this bit is set, +, ? and | aren't recognized as operators.
+   If not set, they are.  */
+#define RE_LIMITED_OPS (RE_INTERVALS << 1)
+
+/* If this bit is set, newline is an alternation operator.
+   If not set, newline is literal.  */
+#define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1)
+
+/* If this bit is set, then `{...}' defines an interval, and \{ and \}
+     are literals.
+  If not set, then `\{...\}' defines an interval.  */
+#define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1)
+
+/* If this bit is set, (...) defines a group, and \( and \) are literals.
+   If not set, \(...\) defines a group, and ( and ) are literals.  */
+#define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1)
+
+/* If this bit is set, then \<digit> matches <digit>.
+   If not set, then \<digit> is a back-reference.  */
+#define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1)
+
+/* If this bit is set, then | is an alternation operator, and \| is literal.
+   If not set, then \| is an alternation operator, and | is literal.  */
+#define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1)
+
+/* If this bit is set, then an ending range point collating higher
+     than the starting range point, as in [z-a], is invalid.
+   If not set, then when ending range point collates higher than the
+     starting range point, the range is ignored.  */
+#define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1)
+
+/* If this bit is set, then an unmatched ) is ordinary.
+   If not set, then an unmatched ) is invalid.  */
+#define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
+
+/* If this bit is set, succeed as soon as we match the whole pattern,
+   without further backtracking.  */
+#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
+
+/* If this bit is set, do not process the GNU regex operators.
+   If not set, then the GNU regex operators are recognized. */
+#define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1)
+
+/* If this bit is set, turn on internal regex debugging.
+   If not set, and debugging was on, turn it off.
+   This only works if regex.c is compiled -DDEBUG.
+   We define this bit always, so that all that's needed to turn on
+   debugging is to recompile regex.c; the calling code can always have
+   this bit set, and it won't affect anything in the normal case. */
+#define RE_DEBUG (RE_NO_GNU_OPS << 1)
+
+/* If this bit is set, a syntactically invalid interval is treated as
+   a string of ordinary characters.  For example, the ERE 'a{1' is
+   treated as 'a\{1'.  */
+#define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1)
+
+/* If this bit is set, then ignore case when matching.
+   If not set, then case is significant.  */
+#define RE_ICASE (RE_INVALID_INTERVAL_ORD << 1)
+
+/* This global variable defines the particular regexp syntax to use (for
+   some interfaces).  When a regexp is compiled, the syntax used is
+   stored in the pattern buffer, so changing this does not affect
+   already-compiled regexps.  */
+extern reg_syntax_t re_syntax_options;
+
+/* Define combinations of the above bits for the standard possibilities.
+   (The [[[ comments delimit what gets put into the Texinfo file, so
+   don't delete them!)  */
+/* [[[begin syntaxes]]] */
+#define RE_SYNTAX_EMACS 0
+
+#define RE_SYNTAX_AWK							\
+  (RE_BACKSLASH_ESCAPE_IN_LISTS   | RE_DOT_NOT_NULL			\
+   | RE_NO_BK_PARENS              | RE_NO_BK_REFS			\
+   | RE_NO_BK_VBAR                | RE_NO_EMPTY_RANGES			\
+   | RE_DOT_NEWLINE		  | RE_CONTEXT_INDEP_ANCHORS		\
+   | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS)
+
+#define RE_SYNTAX_GNU_AWK						\
+  ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG)	\
+   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS		\
+       | RE_CONTEXT_INVALID_OPS ))
+
+#define RE_SYNTAX_POSIX_AWK 						\
+  (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS		\
+   | RE_INTERVALS	    | RE_NO_GNU_OPS)
+
+#define RE_SYNTAX_GREP							\
+  (RE_BK_PLUS_QM              | RE_CHAR_CLASSES				\
+   | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS				\
+   | RE_NEWLINE_ALT)
+
+#define RE_SYNTAX_EGREP							\
+  (RE_CHAR_CLASSES        | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE			\
+   | RE_NEWLINE_ALT       | RE_NO_BK_PARENS				\
+   | RE_NO_BK_VBAR)
+
+#define RE_SYNTAX_POSIX_EGREP						\
+  (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES			\
+   | RE_INVALID_INTERVAL_ORD)
+
+/* P1003.2/D11.2, section 4.20.7.1, lines 5078ff.  */
+#define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC
+
+#define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC
+
+/* Syntax bits common to both basic and extended POSIX regex syntax.  */
+#define _RE_SYNTAX_POSIX_COMMON						\
+  (RE_CHAR_CLASSES | RE_DOT_NEWLINE      | RE_DOT_NOT_NULL		\
+   | RE_INTERVALS  | RE_NO_EMPTY_RANGES)
+
+#define RE_SYNTAX_POSIX_BASIC						\
+  (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM)
+
+/* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes
+   RE_LIMITED_OPS, i.e., \? \+ \| are not recognized.  Actually, this
+   isn't minimal, since other operators, such as \`, aren't disabled.  */
+#define RE_SYNTAX_POSIX_MINIMAL_BASIC					\
+  (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS)
+
+#define RE_SYNTAX_POSIX_EXTENDED					\
+  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INDEP_OPS   | RE_NO_BK_BRACES				\
+   | RE_NO_BK_PARENS        | RE_NO_BK_VBAR				\
+   | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD)
+
+/* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is
+   removed and RE_NO_BK_REFS is added.  */
+#define RE_SYNTAX_POSIX_MINIMAL_EXTENDED				\
+  (_RE_SYNTAX_POSIX_COMMON  | RE_CONTEXT_INDEP_ANCHORS			\
+   | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES				\
+   | RE_NO_BK_PARENS        | RE_NO_BK_REFS				\
+   | RE_NO_BK_VBAR	    | RE_UNMATCHED_RIGHT_PAREN_ORD)
+/* [[[end syntaxes]]] */
+
+/* Maximum number of duplicates an interval can allow.  Some systems
+   (erroneously) define this in other header files, but we want our
+   value, so remove any previous define.  */
+#ifdef RE_DUP_MAX
+# undef RE_DUP_MAX
+#endif
+/* If sizeof(int) == 2, then ((1 << 15) - 1) overflows.  */
+#define RE_DUP_MAX (0x7fff)
+
+
+/* POSIX `cflags' bits (i.e., information for `regcomp').  */
+
+/* If this bit is set, then use extended regular expression syntax.
+   If not set, then use basic regular expression syntax.  */
+#define REG_EXTENDED 1
+
+/* If this bit is set, then ignore case when matching.
+   If not set, then case is significant.  */
+#define REG_ICASE (REG_EXTENDED << 1)
+
+/* If this bit is set, then anchors do not match at newline
+     characters in the string.
+   If not set, then anchors do match at newlines.  */
+#define REG_NEWLINE (REG_ICASE << 1)
+
+/* If this bit is set, then report only success or fail in regexec.
+   If not set, then returns differ between not matching and errors.  */
+#define REG_NOSUB (REG_NEWLINE << 1)
+
+
+/* POSIX `eflags' bits (i.e., information for regexec).  */
+
+/* If this bit is set, then the beginning-of-line operator doesn't match
+     the beginning of the string (presumably because it's not the
+     beginning of a line).
+   If not set, then the beginning-of-line operator does match the
+     beginning of the string.  */
+#define REG_NOTBOL 1
+
+/* Like REG_NOTBOL, except for the end-of-line.  */
+#define REG_NOTEOL (1 << 1)
+
+
+/* If any error codes are removed, changed, or added, update the
+   `re_error_msg' table in regex.c.  */
+typedef enum
+{
+#ifdef _XOPEN_SOURCE
+  REG_ENOSYS = -1,	/* This will never happen for this implementation.  */
+#endif
+
+  REG_NOERROR = 0,	/* Success.  */
+  REG_NOMATCH,		/* Didn't find a match (for regexec).  */
+
+  /* POSIX regcomp return error codes.  (In the order listed in the
+     standard.)  */
+  REG_BADPAT,		/* Invalid pattern.  */
+  REG_ECOLLATE,		/* Not implemented.  */
+  REG_ECTYPE,		/* Invalid character class name.  */
+  REG_EESCAPE,		/* Trailing backslash.  */
+  REG_ESUBREG,		/* Invalid back reference.  */
+  REG_EBRACK,		/* Unmatched left bracket.  */
+  REG_EPAREN,		/* Parenthesis imbalance.  */
+  REG_EBRACE,		/* Unmatched \{.  */
+  REG_BADBR,		/* Invalid contents of \{\}.  */
+  REG_ERANGE,		/* Invalid range end.  */
+  REG_ESPACE,		/* Ran out of memory.  */
+  REG_BADRPT,		/* No preceding re for repetition op.  */
+
+  /* Error codes we've added.  */
+  REG_EEND,		/* Premature end.  */
+  REG_ESIZE,		/* Compiled pattern bigger than 2^16 bytes.  */
+  REG_ERPAREN		/* Unmatched ) or \); not returned from regcomp.  */
+} reg_errcode_t;
+
+/* This data structure represents a compiled pattern.  Before calling
+   the pattern compiler, the fields `buffer', `allocated', `fastmap',
+   `translate', and `no_sub' can be set.  After the pattern has been
+   compiled, the `re_nsub' field is available.  All other fields are
+   private to the regex routines.  */
+
+#ifndef RE_TRANSLATE_TYPE
+# define RE_TRANSLATE_TYPE char *
+#endif
+
+struct re_pattern_buffer
+{
+/* [[[begin pattern_buffer]]] */
+	/* Space that holds the compiled pattern.  It is declared as
+          `unsigned char *' because its elements are
+           sometimes used as array indexes.  */
+  unsigned char *buffer;
+
+	/* Number of bytes to which `buffer' points.  */
+  unsigned long int allocated;
+
+	/* Number of bytes actually used in `buffer'.  */
+  unsigned long int used;
+
+        /* Syntax setting with which the pattern was compiled.  */
+  reg_syntax_t syntax;
+
+        /* Pointer to a fastmap, if any, otherwise zero.  re_search uses
+           the fastmap, if there is one, to skip over impossible
+           starting points for matches.  */
+  char *fastmap;
+
+        /* Either a translate table to apply to all characters before
+           comparing them, or zero for no translation.  The translation
+           is applied to a pattern when it is compiled and to a string
+           when it is matched.  */
+  RE_TRANSLATE_TYPE translate;
+
+	/* Number of subexpressions found by the compiler.  */
+  size_t re_nsub;
+
+        /* Zero if this pattern cannot match the empty string, one else.
+           Well, in truth it's used only in `re_search_2', to see
+           whether or not we should use the fastmap, so we don't set
+           this absolutely perfectly; see `re_compile_fastmap' (the
+           `duplicate' case).  */
+  unsigned can_be_null : 1;
+
+        /* If REGS_UNALLOCATED, allocate space in the `regs' structure
+             for `max (RE_NREGS, re_nsub + 1)' groups.
+           If REGS_REALLOCATE, reallocate space if necessary.
+           If REGS_FIXED, use what's there.  */
+#define REGS_UNALLOCATED 0
+#define REGS_REALLOCATE 1
+#define REGS_FIXED 2
+  unsigned regs_allocated : 2;
+
+        /* Set to zero when `regex_compile' compiles a pattern; set to one
+           by `re_compile_fastmap' if it updates the fastmap.  */
+  unsigned fastmap_accurate : 1;
+
+        /* If set, `re_match_2' does not return information about
+           subexpressions.  */
+  unsigned no_sub : 1;
+
+        /* If set, a beginning-of-line anchor doesn't match at the
+           beginning of the string.  */
+  unsigned not_bol : 1;
+
+        /* Similarly for an end-of-line anchor.  */
+  unsigned not_eol : 1;
+
+        /* If true, an anchor at a newline matches.  */
+  unsigned newline_anchor : 1;
+
+/* [[[end pattern_buffer]]] */
+};
+
+typedef struct re_pattern_buffer regex_t;
+
+/* Type for byte offsets within the string.  POSIX mandates this.  */
+typedef int regoff_t;
+
+
+/* This is the structure we store register match data in.  See
+   regex.texinfo for a full description of what registers match.  */
+struct re_registers
+{
+  unsigned num_regs;
+  regoff_t *start;
+  regoff_t *end;
+};
+
+
+/* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer,
+   `re_match_2' returns information about at least this many registers
+   the first time a `regs' structure is passed.  */
+#ifndef RE_NREGS
+# define RE_NREGS 30
+#endif
+
+
+/* POSIX specification for registers.  Aside from the different names than
+   `re_registers', POSIX uses an array of structures, instead of a
+   structure of arrays.  */
+typedef struct
+{
+  regoff_t rm_so;  /* Byte offset from string's start to substring's start.  */
+  regoff_t rm_eo;  /* Byte offset from string's start to substring's end.  */
+} regmatch_t;
+
+/* Declarations for routines.  */
+
+/* Sets the current default syntax to SYNTAX, and return the old syntax.
+   You can also simply assign to the `re_syntax_options' variable.  */
+extern reg_syntax_t re_set_syntax (reg_syntax_t syntax);
+
+/* Compile the regular expression PATTERN, with length LENGTH
+   and syntax given by the global `re_syntax_options', into the buffer
+   BUFFER.  Return NULL if successful, and an error string if not.  */
+extern const char *re_compile_pattern (const char *pattern, size_t length,
+				       struct re_pattern_buffer *buffer);
+
+
+/* Compile a fastmap for the compiled pattern in BUFFER; used to
+   accelerate searches.  Return 0 if successful and -2 if was an
+   internal error.  */
+extern int re_compile_fastmap (struct re_pattern_buffer *buffer);
+
+
+/* Search in the string STRING (with length LENGTH) for the pattern
+   compiled into BUFFER.  Start searching at position START, for RANGE
+   characters.  Return the starting position of the match, -1 for no
+   match, or -2 for an internal error.  Also return register
+   information in REGS (if REGS and BUFFER->no_sub are nonzero).  */
+extern int re_search (struct re_pattern_buffer *buffer, const char *string,
+		      int length, int start, int range,
+		      struct re_registers *regs);
+
+
+/* Like `re_search', but search in the concatenation of STRING1 and
+   STRING2.  Also, stop searching at index START + STOP.  */
+extern int re_search_2 (struct re_pattern_buffer *buffer, const char *string1,
+			int length1, const char *string2, int length2,
+			int start, int range, struct re_registers *regs,
+			int stop);
+
+
+/* Like `re_search', but return how many characters in STRING the regexp
+   in BUFFER matched, starting at position START.  */
+extern int re_match (struct re_pattern_buffer *buffer, const char *string,
+		     int length, int start, struct re_registers *regs);
+
+
+/* Relates to `re_match' as `re_search_2' relates to `re_search'.  */
+extern int re_match_2 (struct re_pattern_buffer *buffer, const char *string1,
+		       int length1, const char *string2, int length2,
+		       int start, struct re_registers *regs, int stop);
+
+
+/* Set REGS to hold NUM_REGS registers, storing them in STARTS and
+   ENDS.  Subsequent matches using BUFFER and REGS will use this memory
+   for recording register information.  STARTS and ENDS must be
+   allocated with malloc, and must each be at least `NUM_REGS * sizeof
+   (regoff_t)' bytes long.
+
+   If NUM_REGS == 0, then subsequent matches should allocate their own
+   register data.
+
+   Unless this function is called, the first search or match using
+   PATTERN_BUFFER will allocate its own register data, without
+   freeing the old data.  */
+extern void re_set_registers (struct re_pattern_buffer *buffer,
+			      struct re_registers *regs, unsigned num_regs,
+			      regoff_t *starts, regoff_t *ends);
+
+#if defined _REGEX_RE_COMP || defined _LIBC
+# ifndef _CRAY
+/* 4.2 bsd compatibility.  */
+extern char *re_comp (const char *);
+extern int re_exec (const char *);
+# endif
+#endif
+
+/* GCC 2.95 and later have "__restrict"; C99 compilers have
+   "restrict", and "configure" may have defined "restrict".  */
+#ifndef __restrict
+# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
+#  if defined restrict || 199901L <= __STDC_VERSION__
+#   define __restrict restrict
+#  else
+#   define __restrict
+#  endif
+# endif
+#endif
+/* gcc 3.1 and up support the [restrict] syntax.  */
+#ifndef __restrict_arr
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
+#  define __restrict_arr __restrict
+# else
+#  define __restrict_arr
+# endif
+#endif
+
+/* POSIX compatibility.  */
+extern int regcomp (regex_t *__restrict __preg,
+		    const char *__restrict __pattern,
+		    int __cflags);
+
+extern int regexec (const regex_t *__restrict __preg,
+		    const char *__restrict __string, size_t __nmatch,
+		    regmatch_t __pmatch[__restrict_arr],
+		    int __eflags);
+
+extern size_t regerror (int __errcode, const regex_t *__preg,
+			char *__errbuf, size_t __errbuf_size);
+
+extern void regfree (regex_t *__preg);
+
+
+#ifdef __cplusplus
+}
+#endif	/* C++ */
+
+#endif /* regex.h */
+
+/*
+Local variables:
+make-backup-files: t
+version-control: t
+trim-versions-without-asking: nil
+End:
+*/
diff --git a/mailbox/strcase.h b/mailbox/strcase.h
new file mode 100644
index 0000000..9461392
--- /dev/null
+++ b/mailbox/strcase.h
@@ -0,0 +1,47 @@
+/* Case-insensitive string comparison functions.
+   Copyright (C) 1995-1996, 2001, 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _STRCASE_H
+#define _STRCASE_H
+
+#include <stddef.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Compare strings S1 and S2, ignoring case, returning less than, equal to or
+   greater than zero if S1 is lexicographically less than, equal to or greater
+   than S2.
+   Note: This function does not work correctly in multibyte locales.  */
+extern int strcasecmp (const char *s1, const char *s2);
+
+/* Compare no more than N characters of strings S1 and S2, ignoring case,
+   returning less than, equal to or greater than zero if S1 is
+   lexicographically less than, equal to or greater than S2.
+   Note: This function can not work correctly in multibyte locales.  */
+extern int strncasecmp (const char *s1, const char *s2, size_t n);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _STRCASE_H */
diff --git a/mailbox/strcasecmp.c b/mailbox/strcasecmp.c
new file mode 100644
index 0000000..cf4ab88
--- /dev/null
+++ b/mailbox/strcasecmp.c
@@ -0,0 +1,66 @@
+/* strcasecmp.c -- case insensitive string comparator
+   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef LENGTH_LIMIT
+# define STRXCASECMP_FUNCTION strncasecmp
+# define STRXCASECMP_DECLARE_N , size_t n
+# define LENGTH_LIMIT_EXPR(Expr) Expr
+#else
+# define STRXCASECMP_FUNCTION strcasecmp
+# define STRXCASECMP_DECLARE_N /* empty */
+# define LENGTH_LIMIT_EXPR(Expr) 0
+#endif
+
+#include <stddef.h>
+#include <ctype.h>
+
+#define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch))
+
+/* Compare {{no more than N characters of }}strings S1 and S2,
+   ignoring case, returning less than, equal to or
+   greater than zero if S1 is lexicographically less
+   than, equal to or greater than S2.  */
+
+int
+STRXCASECMP_FUNCTION (const char *s1, const char *s2 STRXCASECMP_DECLARE_N)
+{
+  register const unsigned char *p1 = (const unsigned char *) s1;
+  register const unsigned char *p2 = (const unsigned char *) s2;
+  unsigned char c1, c2;
+
+  if (p1 == p2 || LENGTH_LIMIT_EXPR (n == 0))
+    return 0;
+
+  do
+    {
+      c1 = TOLOWER (*p1);
+      c2 = TOLOWER (*p2);
+
+      if (LENGTH_LIMIT_EXPR (--n == 0) || c1 == '\0')
+	break;
+
+      ++p1;
+      ++p2;
+    }
+  while (c1 == c2);
+
+  return c1 - c2;
+}
diff --git a/mailbox/strchrnul.h b/mailbox/strchrnul.h
new file mode 100644
index 0000000..f7589e9
--- /dev/null
+++ b/mailbox/strchrnul.h
@@ -0,0 +1,28 @@
+/* Searching in a string.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if HAVE_STRCHRNUL
+
+/* Get strchrnul() declaration.  */
+#include <string.h>
+
+#else
+
+/* Find the first occurrence of C in S or the final NUL byte.  */
+extern char *strchrnul (const char *s, int c_in);
+
+#endif
diff --git a/mailbox/strncasecmp.c b/mailbox/strncasecmp.c
new file mode 100644
index 0000000..68d95aa
--- /dev/null
+++ b/mailbox/strncasecmp.c
@@ -0,0 +1,2 @@
+#define LENGTH_LIMIT
+#include "strcasecmp.c"
diff --git a/mailbox/strndup.h b/mailbox/strndup.h
new file mode 100644
index 0000000..318e799
--- /dev/null
+++ b/mailbox/strndup.h
@@ -0,0 +1,30 @@
+/* Duplicate a size-bounded string.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if HAVE_STRNDUP
+
+/* Get strndup() declaration.  */
+#include <string.h>
+
+#else
+
+#include <stddef.h>
+
+/* Return a newly allocated copy of at most N bytes of STRING.  */
+extern char *strndup (const char *string, size_t n);
+
+#endif
diff --git a/mailbox/strtok_r.h b/mailbox/strtok_r.h
new file mode 100644
index 0000000..36ae7db
--- /dev/null
+++ b/mailbox/strtok_r.h
@@ -0,0 +1,53 @@
+/* Split string into tokens
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef STRTOK_R_H
+#define STRTOK_R_H
+
+/* Get strtok_r declaration, if available.  */
+#include <string.h>
+
+/* Parse S into tokens separated by characters in DELIM.
+   If S is NULL, the saved pointer in SAVE_PTR is used as
+   the next starting point.  For example:
+	char s[] = "-abc-=-def";
+	char *sp;
+	x = strtok_r(s, "-", &sp);	// x = "abc", sp = "=-def"
+	x = strtok_r(NULL, "-=", &sp);	// x = "def", sp = NULL
+	x = strtok_r(NULL, "=", &sp);	// x = NULL
+		// s = "abc\0-def\0"
+
+   This is a variant of strtok() that is multithread-safe.
+
+   For the POSIX documentation for this function, see:
+   http://www.opengroup.org/onlinepubs/009695399/functions/strtok.html
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+   Caveat: It doesn't work with multibyte strings unless all of the delimiter
+           characters are ASCII characters < 0x30.
+
+   See also strsep().
+*/
+#if defined HAVE_DECL_STRTOK_R && !HAVE_DECL_STRTOK_R
+extern char *strtok_r(char *restrict s, const char *restrict sep,
+		      char **restrict lasts);
+#endif
+
+#endif /* STRTOK_R_H */
diff --git a/mailbox/sysexit_.h b/mailbox/sysexit_.h
new file mode 100644
index 0000000..7afd370
--- /dev/null
+++ b/mailbox/sysexit_.h
@@ -0,0 +1,39 @@
+/* exit() exit codes for some BSD system programs.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Written by Simon Josefsson based on sysexits(3) man page */
+
+#ifndef _SYSEXITS_H
+#define _SYSEXITS_H
+
+#define EX_USAGE 64
+#define EX_DATAERR 65
+#define EX_NOINPUT 66
+#define EX_NOUSER 67
+#define EX_NOHOST 68
+#define EX_UNAVAILABLE 69
+#define EX_SOFTWARE 70
+#define EX_OSERR 71
+#define EX_OSFILE 72
+#define EX_CANTCREAT 73
+#define EX_IOERR 74
+#define EX_TEMPFAIL 75
+#define EX_PROTOCOL 76
+#define EX_NOPERM 77
+#define EX_CONFIG 78
+
+#endif /* _SYSEXITS_H */
diff --git a/mailbox/vasnprintf.c b/mailbox/vasnprintf.c
new file mode 100644
index 0000000..ff80857
--- /dev/null
+++ b/mailbox/vasnprintf.c
@@ -0,0 +1,896 @@
+/* vsprintf with automatic memory allocation.
+   Copyright (C) 1999, 2002-2004 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Tell glibc's <stdio.h> to provide a prototype for snprintf().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#ifndef IN_LIBINTL
+# include <alloca.h>
+#endif
+
+/* Specification.  */
+#if WIDE_CHAR_VERSION
+# include "vasnwprintf.h"
+#else
+# include "vasnprintf.h"
+#endif
+
+#include <stdio.h>	/* snprintf(), sprintf() */
+#include <stdlib.h>	/* abort(), malloc(), realloc(), free() */
+#include <string.h>	/* memcpy(), strlen() */
+#include <errno.h>	/* errno */
+#include <limits.h>	/* CHAR_BIT, INT_MAX */
+#include <float.h>	/* DBL_MAX_EXP, LDBL_MAX_EXP */
+#if WIDE_CHAR_VERSION
+# include "wprintf-parse.h"
+#else
+# include "printf-parse.h"
+#endif
+
+/* Checked size_t computations.  */
+#include "xsize.h"
+
+#ifdef HAVE_WCHAR_T
+# ifdef HAVE_WCSLEN
+#  define local_wcslen wcslen
+# else
+   /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
+      a dependency towards this library, here is a local substitute.
+      Define this substitute only once, even if this file is included
+      twice in the same compilation unit.  */
+#  ifndef local_wcslen_defined
+#   define local_wcslen_defined 1
+static size_t
+local_wcslen (const wchar_t *s)
+{
+  const wchar_t *ptr;
+
+  for (ptr = s; *ptr != (wchar_t) 0; ptr++)
+    ;
+  return ptr - s;
+}
+#  endif
+# endif
+#endif
+
+#if WIDE_CHAR_VERSION
+# define VASNPRINTF vasnwprintf
+# define CHAR_T wchar_t
+# define DIRECTIVE wchar_t_directive
+# define DIRECTIVES wchar_t_directives
+# define PRINTF_PARSE wprintf_parse
+# define USE_SNPRINTF 1
+# if HAVE_DECL__SNWPRINTF
+   /* On Windows, the function swprintf() has a different signature than
+      on Unix; we use the _snwprintf() function instead.  */
+#  define SNPRINTF _snwprintf
+# else
+   /* Unix.  */
+#  define SNPRINTF swprintf
+# endif
+#else
+# define VASNPRINTF vasnprintf
+# define CHAR_T char
+# define DIRECTIVE char_directive
+# define DIRECTIVES char_directives
+# define PRINTF_PARSE printf_parse
+# define USE_SNPRINTF (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF)
+# if HAVE_DECL__SNPRINTF
+   /* Windows.  */
+#  define SNPRINTF _snprintf
+# else
+   /* Unix.  */
+#  define SNPRINTF snprintf
+# endif
+#endif
+
+CHAR_T *
+VASNPRINTF (CHAR_T *resultbuf, size_t *lengthp, const CHAR_T *format, va_list args)
+{
+  DIRECTIVES d;
+  arguments a;
+
+  if (PRINTF_PARSE (format, &d, &a) < 0)
+    {
+      errno = EINVAL;
+      return NULL;
+    }
+
+#define CLEANUP() \
+  free (d.dir);								\
+  if (a.arg)								\
+    free (a.arg);
+
+  if (printf_fetchargs (args, &a) < 0)
+    {
+      CLEANUP ();
+      errno = EINVAL;
+      return NULL;
+    }
+
+  {
+    size_t buf_neededlength;
+    CHAR_T *buf;
+    CHAR_T *buf_malloced;
+    const CHAR_T *cp;
+    size_t i;
+    DIRECTIVE *dp;
+    /* Output string accumulator.  */
+    CHAR_T *result;
+    size_t allocated;
+    size_t length;
+
+    /* Allocate a small buffer that will hold a directive passed to
+       sprintf or snprintf.  */
+    buf_neededlength =
+      xsum4 (7, d.max_width_length, d.max_precision_length, 6);
+#if HAVE_ALLOCA
+    if (buf_neededlength < 4000 / sizeof (CHAR_T))
+      {
+	buf = (CHAR_T *) alloca (buf_neededlength * sizeof (CHAR_T));
+	buf_malloced = NULL;
+      }
+    else
+#endif
+      {
+	size_t buf_memsize = xtimes (buf_neededlength, sizeof (CHAR_T));
+	if (size_overflow_p (buf_memsize))
+	  goto out_of_memory_1;
+	buf = (CHAR_T *) malloc (buf_memsize);
+	if (buf == NULL)
+	  goto out_of_memory_1;
+	buf_malloced = buf;
+      }
+
+    if (resultbuf != NULL)
+      {
+	result = resultbuf;
+	allocated = *lengthp;
+      }
+    else
+      {
+	result = NULL;
+	allocated = 0;
+      }
+    length = 0;
+    /* Invariants:
+       result is either == resultbuf or == NULL or malloc-allocated.
+       If length > 0, then result != NULL.  */
+
+    /* Ensures that allocated >= needed.  Aborts through a jump to
+       out_of_memory if needed is SIZE_MAX or otherwise too big.  */
+#define ENSURE_ALLOCATION(needed) \
+    if ((needed) > allocated)						     \
+      {									     \
+	size_t memory_size;						     \
+	CHAR_T *memory;							     \
+									     \
+	allocated = (allocated > 0 ? xtimes (allocated, 2) : 12);	     \
+	if ((needed) > allocated)					     \
+	  allocated = (needed);						     \
+	memory_size = xtimes (allocated, sizeof (CHAR_T));		     \
+	if (size_overflow_p (memory_size))				     \
+	  goto out_of_memory;						     \
+	if (result == resultbuf || result == NULL)			     \
+	  memory = (CHAR_T *) malloc (memory_size);			     \
+	else								     \
+	  memory = (CHAR_T *) realloc (result, memory_size);		     \
+	if (memory == NULL)						     \
+	  goto out_of_memory;						     \
+	if (result == resultbuf && length > 0)				     \
+	  memcpy (memory, result, length * sizeof (CHAR_T));		     \
+	result = memory;						     \
+      }
+
+    for (cp = format, i = 0, dp = &d.dir[0]; ; cp = dp->dir_end, i++, dp++)
+      {
+	if (cp != dp->dir_start)
+	  {
+	    size_t n = dp->dir_start - cp;
+	    size_t augmented_length = xsum (length, n);
+
+	    ENSURE_ALLOCATION (augmented_length);
+	    memcpy (result + length, cp, n * sizeof (CHAR_T));
+	    length = augmented_length;
+	  }
+	if (i == d.count)
+	  break;
+
+	/* Execute a single directive.  */
+	if (dp->conversion == '%')
+	  {
+	    size_t augmented_length;
+
+	    if (!(dp->arg_index == ARG_NONE))
+	      abort ();
+	    augmented_length = xsum (length, 1);
+	    ENSURE_ALLOCATION (augmented_length);
+	    result[length] = '%';
+	    length = augmented_length;
+	  }
+	else
+	  {
+	    if (!(dp->arg_index != ARG_NONE))
+	      abort ();
+
+	    if (dp->conversion == 'n')
+	      {
+		switch (a.arg[dp->arg_index].type)
+		  {
+		  case TYPE_COUNT_SCHAR_POINTER:
+		    *a.arg[dp->arg_index].a.a_count_schar_pointer = length;
+		    break;
+		  case TYPE_COUNT_SHORT_POINTER:
+		    *a.arg[dp->arg_index].a.a_count_short_pointer = length;
+		    break;
+		  case TYPE_COUNT_INT_POINTER:
+		    *a.arg[dp->arg_index].a.a_count_int_pointer = length;
+		    break;
+		  case TYPE_COUNT_LONGINT_POINTER:
+		    *a.arg[dp->arg_index].a.a_count_longint_pointer = length;
+		    break;
+#ifdef HAVE_LONG_LONG
+		  case TYPE_COUNT_LONGLONGINT_POINTER:
+		    *a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
+		    break;
+#endif
+		  default:
+		    abort ();
+		  }
+	      }
+	    else
+	      {
+		arg_type type = a.arg[dp->arg_index].type;
+		CHAR_T *p;
+		unsigned int prefix_count;
+		int prefixes[2];
+#if !USE_SNPRINTF
+		size_t tmp_length;
+		CHAR_T tmpbuf[700];
+		CHAR_T *tmp;
+
+		/* Allocate a temporary buffer of sufficient size for calling
+		   sprintf.  */
+		{
+		  size_t width;
+		  size_t precision;
+
+		  width = 0;
+		  if (dp->width_start != dp->width_end)
+		    {
+		      if (dp->width_arg_index != ARG_NONE)
+			{
+			  int arg;
+
+			  if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+			    abort ();
+			  arg = a.arg[dp->width_arg_index].a.a_int;
+			  width = (arg < 0 ? (unsigned int) (-arg) : arg);
+			}
+		      else
+			{
+			  const CHAR_T *digitp = dp->width_start;
+
+			  do
+			    width = xsum (xtimes (width, 10), *digitp++ - '0');
+			  while (digitp != dp->width_end);
+			}
+		    }
+
+		  precision = 6;
+		  if (dp->precision_start != dp->precision_end)
+		    {
+		      if (dp->precision_arg_index != ARG_NONE)
+			{
+			  int arg;
+
+			  if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+			    abort ();
+			  arg = a.arg[dp->precision_arg_index].a.a_int;
+			  precision = (arg < 0 ? 0 : arg);
+			}
+		      else
+			{
+			  const CHAR_T *digitp = dp->precision_start + 1;
+
+			  precision = 0;
+			  while (digitp != dp->precision_end)
+			    precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+			}
+		    }
+
+		  switch (dp->conversion)
+		    {
+
+		    case 'd': case 'i': case 'u':
+# ifdef HAVE_LONG_LONG
+		      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+					  * 0.30103 /* binary -> decimal */
+					  * 2 /* estimate for FLAG_GROUP */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 1; /* account for leading sign */
+		      else
+# endif
+		      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+					  * 0.30103 /* binary -> decimal */
+					  * 2 /* estimate for FLAG_GROUP */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 1; /* account for leading sign */
+		      else
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+					  * 0.30103 /* binary -> decimal */
+					  * 2 /* estimate for FLAG_GROUP */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 1; /* account for leading sign */
+		      break;
+
+		    case 'o':
+# ifdef HAVE_LONG_LONG
+		      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+					  * 0.333334 /* binary -> octal */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 1; /* account for leading sign */
+		      else
+# endif
+		      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+					  * 0.333334 /* binary -> octal */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 1; /* account for leading sign */
+		      else
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+					  * 0.333334 /* binary -> octal */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 1; /* account for leading sign */
+		      break;
+
+		    case 'x': case 'X':
+# ifdef HAVE_LONG_LONG
+		      if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned long long) * CHAR_BIT
+					  * 0.25 /* binary -> hexadecimal */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 2; /* account for leading sign or alternate form */
+		      else
+# endif
+		      if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned long) * CHAR_BIT
+					  * 0.25 /* binary -> hexadecimal */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 2; /* account for leading sign or alternate form */
+		      else
+			tmp_length =
+			  (unsigned int) (sizeof (unsigned int) * CHAR_BIT
+					  * 0.25 /* binary -> hexadecimal */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 2; /* account for leading sign or alternate form */
+		      break;
+
+		    case 'f': case 'F':
+# ifdef HAVE_LONG_DOUBLE
+		      if (type == TYPE_LONGDOUBLE)
+			tmp_length =
+			  (unsigned int) (LDBL_MAX_EXP
+					  * 0.30103 /* binary -> decimal */
+					  * 2 /* estimate for FLAG_GROUP */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 10; /* sign, decimal point etc. */
+		      else
+# endif
+			tmp_length =
+			  (unsigned int) (DBL_MAX_EXP
+					  * 0.30103 /* binary -> decimal */
+					  * 2 /* estimate for FLAG_GROUP */
+					 )
+			  + 1 /* turn floor into ceil */
+			  + 10; /* sign, decimal point etc. */
+		      tmp_length = xsum (tmp_length, precision);
+		      break;
+
+		    case 'e': case 'E': case 'g': case 'G':
+		    case 'a': case 'A':
+		      tmp_length =
+			12; /* sign, decimal point, exponent etc. */
+		      tmp_length = xsum (tmp_length, precision);
+		      break;
+
+		    case 'c':
+# if defined HAVE_WINT_T && !WIDE_CHAR_VERSION
+		      if (type == TYPE_WIDE_CHAR)
+			tmp_length = MB_CUR_MAX;
+		      else
+# endif
+			tmp_length = 1;
+		      break;
+
+		    case 's':
+# ifdef HAVE_WCHAR_T
+		      if (type == TYPE_WIDE_STRING)
+			{
+			  tmp_length =
+			    local_wcslen (a.arg[dp->arg_index].a.a_wide_string);
+
+#  if !WIDE_CHAR_VERSION
+			  tmp_length = xtimes (tmp_length, MB_CUR_MAX);
+#  endif
+			}
+		      else
+# endif
+			tmp_length = strlen (a.arg[dp->arg_index].a.a_string);
+		      break;
+
+		    case 'p':
+		      tmp_length =
+			(unsigned int) (sizeof (void *) * CHAR_BIT
+					* 0.25 /* binary -> hexadecimal */
+				       )
+			  + 1 /* turn floor into ceil */
+			  + 2; /* account for leading 0x */
+		      break;
+
+		    default:
+		      abort ();
+		    }
+
+		  if (tmp_length < width)
+		    tmp_length = width;
+
+		  tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+		}
+
+		if (tmp_length <= sizeof (tmpbuf) / sizeof (CHAR_T))
+		  tmp = tmpbuf;
+		else
+		  {
+		    size_t tmp_memsize = xtimes (tmp_length, sizeof (CHAR_T));
+
+		    if (size_overflow_p (tmp_memsize))
+		      /* Overflow, would lead to out of memory.  */
+		      goto out_of_memory;
+		    tmp = (CHAR_T *) malloc (tmp_memsize);
+		    if (tmp == NULL)
+		      /* Out of memory.  */
+		      goto out_of_memory;
+		  }
+#endif
+
+		/* Construct the format string for calling snprintf or
+		   sprintf.  */
+		p = buf;
+		*p++ = '%';
+		if (dp->flags & FLAG_GROUP)
+		  *p++ = '\'';
+		if (dp->flags & FLAG_LEFT)
+		  *p++ = '-';
+		if (dp->flags & FLAG_SHOWSIGN)
+		  *p++ = '+';
+		if (dp->flags & FLAG_SPACE)
+		  *p++ = ' ';
+		if (dp->flags & FLAG_ALT)
+		  *p++ = '#';
+		if (dp->flags & FLAG_ZERO)
+		  *p++ = '0';
+		if (dp->width_start != dp->width_end)
+		  {
+		    size_t n = dp->width_end - dp->width_start;
+		    memcpy (p, dp->width_start, n * sizeof (CHAR_T));
+		    p += n;
+		  }
+		if (dp->precision_start != dp->precision_end)
+		  {
+		    size_t n = dp->precision_end - dp->precision_start;
+		    memcpy (p, dp->precision_start, n * sizeof (CHAR_T));
+		    p += n;
+		  }
+
+		switch (type)
+		  {
+#ifdef HAVE_LONG_LONG
+		  case TYPE_LONGLONGINT:
+		  case TYPE_ULONGLONGINT:
+		    *p++ = 'l';
+		    /*FALLTHROUGH*/
+#endif
+		  case TYPE_LONGINT:
+		  case TYPE_ULONGINT:
+#ifdef HAVE_WINT_T
+		  case TYPE_WIDE_CHAR:
+#endif
+#ifdef HAVE_WCHAR_T
+		  case TYPE_WIDE_STRING:
+#endif
+		    *p++ = 'l';
+		    break;
+#ifdef HAVE_LONG_DOUBLE
+		  case TYPE_LONGDOUBLE:
+		    *p++ = 'L';
+		    break;
+#endif
+		  default:
+		    break;
+		  }
+		*p = dp->conversion;
+#if USE_SNPRINTF
+		p[1] = '%';
+		p[2] = 'n';
+		p[3] = '\0';
+#else
+		p[1] = '\0';
+#endif
+
+		/* Construct the arguments for calling snprintf or sprintf.  */
+		prefix_count = 0;
+		if (dp->width_arg_index != ARG_NONE)
+		  {
+		    if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+		      abort ();
+		    prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
+		  }
+		if (dp->precision_arg_index != ARG_NONE)
+		  {
+		    if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+		      abort ();
+		    prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
+		  }
+
+#if USE_SNPRINTF
+		/* Prepare checking whether snprintf returns the count
+		   via %n.  */
+		ENSURE_ALLOCATION (xsum (length, 1));
+		result[length] = '\0';
+#endif
+
+		for (;;)
+		  {
+		    size_t maxlen;
+		    int count;
+		    int retcount;
+
+		    maxlen = allocated - length;
+		    count = -1;
+		    retcount = 0;
+
+#if USE_SNPRINTF
+# define SNPRINTF_BUF(arg) \
+		    switch (prefix_count)				    \
+		      {							    \
+		      case 0:						    \
+			retcount = SNPRINTF (result + length, maxlen, buf,  \
+					     arg, &count);		    \
+			break;						    \
+		      case 1:						    \
+			retcount = SNPRINTF (result + length, maxlen, buf,  \
+					     prefixes[0], arg, &count);	    \
+			break;						    \
+		      case 2:						    \
+			retcount = SNPRINTF (result + length, maxlen, buf,  \
+					     prefixes[0], prefixes[1], arg, \
+					     &count);			    \
+			break;						    \
+		      default:						    \
+			abort ();					    \
+		      }
+#else
+# define SNPRINTF_BUF(arg) \
+		    switch (prefix_count)				    \
+		      {							    \
+		      case 0:						    \
+			count = sprintf (tmp, buf, arg);		    \
+			break;						    \
+		      case 1:						    \
+			count = sprintf (tmp, buf, prefixes[0], arg);	    \
+			break;						    \
+		      case 2:						    \
+			count = sprintf (tmp, buf, prefixes[0], prefixes[1],\
+					 arg);				    \
+			break;						    \
+		      default:						    \
+			abort ();					    \
+		      }
+#endif
+
+		    switch (type)
+		      {
+		      case TYPE_SCHAR:
+			{
+			  int arg = a.arg[dp->arg_index].a.a_schar;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_UCHAR:
+			{
+			  unsigned int arg = a.arg[dp->arg_index].a.a_uchar;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_SHORT:
+			{
+			  int arg = a.arg[dp->arg_index].a.a_short;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_USHORT:
+			{
+			  unsigned int arg = a.arg[dp->arg_index].a.a_ushort;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_INT:
+			{
+			  int arg = a.arg[dp->arg_index].a.a_int;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_UINT:
+			{
+			  unsigned int arg = a.arg[dp->arg_index].a.a_uint;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_LONGINT:
+			{
+			  long int arg = a.arg[dp->arg_index].a.a_longint;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_ULONGINT:
+			{
+			  unsigned long int arg = a.arg[dp->arg_index].a.a_ulongint;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#ifdef HAVE_LONG_LONG
+		      case TYPE_LONGLONGINT:
+			{
+			  long long int arg = a.arg[dp->arg_index].a.a_longlongint;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      case TYPE_ULONGLONGINT:
+			{
+			  unsigned long long int arg = a.arg[dp->arg_index].a.a_ulonglongint;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#endif
+		      case TYPE_DOUBLE:
+			{
+			  double arg = a.arg[dp->arg_index].a.a_double;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#ifdef HAVE_LONG_DOUBLE
+		      case TYPE_LONGDOUBLE:
+			{
+			  long double arg = a.arg[dp->arg_index].a.a_longdouble;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#endif
+		      case TYPE_CHAR:
+			{
+			  int arg = a.arg[dp->arg_index].a.a_char;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#ifdef HAVE_WINT_T
+		      case TYPE_WIDE_CHAR:
+			{
+			  wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#endif
+		      case TYPE_STRING:
+			{
+			  const char *arg = a.arg[dp->arg_index].a.a_string;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#ifdef HAVE_WCHAR_T
+		      case TYPE_WIDE_STRING:
+			{
+			  const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+#endif
+		      case TYPE_POINTER:
+			{
+			  void *arg = a.arg[dp->arg_index].a.a_pointer;
+			  SNPRINTF_BUF (arg);
+			}
+			break;
+		      default:
+			abort ();
+		      }
+
+#if USE_SNPRINTF
+		    /* Portability: Not all implementations of snprintf()
+		       are ISO C 99 compliant.  Determine the number of
+		       bytes that snprintf() has produced or would have
+		       produced.  */
+		    if (count >= 0)
+		      {
+			/* Verify that snprintf() has NUL-terminated its
+			   result.  */
+			if (count < maxlen && result[length + count] != '\0')
+			  abort ();
+			/* Portability hack.  */
+			if (retcount > count)
+			  count = retcount;
+		      }
+		    else
+		      {
+			/* snprintf() doesn't understand the '%n'
+			   directive.  */
+			if (p[1] != '\0')
+			  {
+			    /* Don't use the '%n' directive; instead, look
+			       at the snprintf() return value.  */
+			    p[1] = '\0';
+			    continue;
+			  }
+			else
+			  {
+			    /* Look at the snprintf() return value.  */
+			    if (retcount < 0)
+			      {
+				/* HP-UX 10.20 snprintf() is doubly deficient:
+				   It doesn't understand the '%n' directive,
+				   *and* it returns -1 (rather than the length
+				   that would have been required) when the
+				   buffer is too small.  */
+				size_t bigger_need =
+				  xsum (xtimes (allocated, 2), 12);
+				ENSURE_ALLOCATION (bigger_need);
+				continue;
+			      }
+			    else
+			      count = retcount;
+			  }
+		      }
+#endif
+
+		    /* Attempt to handle failure.  */
+		    if (count < 0)
+		      {
+			if (!(result == resultbuf || result == NULL))
+			  free (result);
+			if (buf_malloced != NULL)
+			  free (buf_malloced);
+			CLEANUP ();
+			errno = EINVAL;
+			return NULL;
+		      }
+
+#if !USE_SNPRINTF
+		    if (count >= tmp_length)
+		      /* tmp_length was incorrectly calculated - fix the
+			 code above!  */
+		      abort ();
+#endif
+
+		    /* Make room for the result.  */
+		    if (count >= maxlen)
+		      {
+			/* Need at least count bytes.  But allocate
+			   proportionally, to avoid looping eternally if
+			   snprintf() reports a too small count.  */
+			size_t n =
+			  xmax (xsum (length, count), xtimes (allocated, 2));
+
+			ENSURE_ALLOCATION (n);
+#if USE_SNPRINTF
+			continue;
+#endif
+		      }
+
+#if USE_SNPRINTF
+		    /* The snprintf() result did fit.  */
+#else
+		    /* Append the sprintf() result.  */
+		    memcpy (result + length, tmp, count * sizeof (CHAR_T));
+		    if (tmp != tmpbuf)
+		      free (tmp);
+#endif
+
+		    length += count;
+		    break;
+		  }
+	      }
+	  }
+      }
+
+    /* Add the final NUL.  */
+    ENSURE_ALLOCATION (xsum (length, 1));
+    result[length] = '\0';
+
+    if (result != resultbuf && length + 1 < allocated)
+      {
+	/* Shrink the allocated memory if possible.  */
+	CHAR_T *memory;
+
+	memory = (CHAR_T *) realloc (result, (length + 1) * sizeof (CHAR_T));
+	if (memory != NULL)
+	  result = memory;
+      }
+
+    if (buf_malloced != NULL)
+      free (buf_malloced);
+    CLEANUP ();
+    *lengthp = length;
+    if (length > INT_MAX)
+      goto length_overflow;
+    return result;
+
+  length_overflow:
+    /* We could produce such a big string, but its length doesn't fit into
+       an 'int'.  POSIX says that snprintf() fails with errno = EOVERFLOW in
+       this case.  */
+    if (result != resultbuf)
+      free (result);
+    errno = EOVERFLOW;
+    return NULL;
+
+  out_of_memory:
+    if (!(result == resultbuf || result == NULL))
+      free (result);
+    if (buf_malloced != NULL)
+      free (buf_malloced);
+  out_of_memory_1:
+    CLEANUP ();
+    errno = ENOMEM;
+    return NULL;
+  }
+}
+
+#undef SNPRINTF
+#undef USE_SNPRINTF
+#undef PRINTF_PARSE
+#undef DIRECTIVES
+#undef DIRECTIVE
+#undef CHAR_T
+#undef VASNPRINTF
diff --git a/mailbox/vasnprintf.h b/mailbox/vasnprintf.h
new file mode 100644
index 0000000..2712106
--- /dev/null
+++ b/mailbox/vasnprintf.h
@@ -0,0 +1,77 @@
+/* vsprintf with automatic memory allocation.
+   Copyright (C) 2002-2004 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _VASNPRINTF_H
+#define _VASNPRINTF_H
+
+/* Get va_list.  */
+#include <stdarg.h>
+
+/* Get size_t.  */
+#include <stddef.h>
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+#  define __attribute__(Spec) /* empty */
+# endif
+/* The __-protected variants of `format' and `printf' attributes
+   are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+#  define __format__ format
+#  define __printf__ printf
+# endif
+#endif
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* Write formatted output to a string dynamically allocated with malloc().
+   You can pass a preallocated buffer for the result in RESULTBUF and its
+   size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
+   If successful, return the address of the string (this may be = RESULTBUF
+   if no dynamic memory allocation was necessary) and set *LENGTHP to the
+   number of resulting bytes, excluding the trailing NUL.  Upon error, set
+   errno and return NULL.
+
+   When dynamic memory allocation occurs, the preallocated buffer is left
+   alone (with possibly modified contents).  This makes it possible to use
+   a statically allocated or stack-allocated buffer, like this:
+
+          char buf[100];
+          size_t len = sizeof (buf);
+          char *output = vasnprintf (buf, &len, format, args);
+          if (output == NULL)
+            ... error handling ...;
+          else
+            {
+              ... use the output string ...;
+              if (output != buf)
+                free (output);
+            }
+  */
+extern char * asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
+       __attribute__ ((__format__ (__printf__, 3, 4)));
+extern char * vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args)
+       __attribute__ ((__format__ (__printf__, 3, 0)));
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _VASNPRINTF_H */
diff --git a/mailbox/vsnprintf.c b/mailbox/vsnprintf.c
new file mode 100644
index 0000000..f35aee4
--- /dev/null
+++ b/mailbox/vsnprintf.c
@@ -0,0 +1,58 @@
+/* Formatted output to strings.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   Written by Simon Josefsson and Yoann Vandoorselaere <yoann@prelude-ids.org>.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include "vsnprintf.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "vasnprintf.h"
+
+/* Print formatted output to string STR.  Similar to vsprintf, but
+   additional length SIZE limit how much is written into STR.  Returns
+   string length of formatted string (which may be larger than SIZE).
+   STR may be NULL, in which case nothing will be written.  On error,
+   return a negative value. */
+int
+vsnprintf (char *str, size_t size, const char *format, va_list args)
+{
+  char *output;
+  size_t len;
+
+  len = size;
+  output = vasnprintf (str, &len, format, args);
+
+  if (!output)
+    return -1;
+
+  if (str != NULL)
+    if (len > size - 1) /* equivalent to: (size > 0 && len >= size) */
+      str[size - 1] = '\0';
+
+  if (output != str)
+    free (output);
+
+  return len;
+}
diff --git a/mailbox/vsnprintf.h b/mailbox/vsnprintf.h
new file mode 100644
index 0000000..36f74df
--- /dev/null
+++ b/mailbox/vsnprintf.h
@@ -0,0 +1,31 @@
+/* Formatted output to strings.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   Written by Simon Josefsson and Yoann Vandoorselaere <yoann@prelude-ids.org>.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef VSNPRINTF_H
+#define VSNPRINTF_H
+
+#include <stdarg.h>
+
+/* Get vsnprintf declaration, if available.  */
+#include <stdio.h>
+
+#if defined HAVE_DECL_VSNPRINTF && !HAVE_DECL_VSNPRINTF
+int vsnprintf (char *str, size_t size, const char *format, va_list args);
+#endif
+
+#endif /* VSNPRINTF_H */
diff --git a/mailbox/xsize.h b/mailbox/xsize.h
new file mode 100644
index 0000000..7634c6d
--- /dev/null
+++ b/mailbox/xsize.h
@@ -0,0 +1,108 @@
+/* xsize.h -- Checked size_t computations.
+
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _XSIZE_H
+#define _XSIZE_H
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get SIZE_MAX.  */
+#include <limits.h>
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+/* The size of memory objects is often computed through expressions of
+   type size_t. Example:
+      void* p = malloc (header_size + n * element_size).
+   These computations can lead to overflow.  When this happens, malloc()
+   returns a piece of memory that is way too small, and the program then
+   crashes while attempting to fill the memory.
+   To avoid this, the functions and macros in this file check for overflow.
+   The convention is that SIZE_MAX represents overflow.
+   malloc (SIZE_MAX) is not guaranteed to fail -- think of a malloc
+   implementation that uses mmap --, it's recommended to use size_overflow_p()
+   or size_in_bounds_p() before invoking malloc().
+   The example thus becomes:
+      size_t size = xsum (header_size, xtimes (n, element_size));
+      void *p = (size_in_bounds_p (size) ? malloc (size) : NULL);
+*/
+
+/* Convert an arbitrary value >= 0 to type size_t.  */
+#define xcast_size_t(N) \
+  ((N) <= SIZE_MAX ? (size_t) (N) : SIZE_MAX)
+
+/* Sum of two sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xsum (size_t size1, size_t size2)
+{
+  size_t sum = size1 + size2;
+  return (sum >= size1 ? sum : SIZE_MAX);
+}
+
+/* Sum of three sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xsum3 (size_t size1, size_t size2, size_t size3)
+{
+  return xsum (xsum (size1, size2), size3);
+}
+
+/* Sum of four sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xsum4 (size_t size1, size_t size2, size_t size3, size_t size4)
+{
+  return xsum (xsum (xsum (size1, size2), size3), size4);
+}
+
+/* Maximum of two sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xmax (size_t size1, size_t size2)
+{
+  /* No explicit check is needed here, because for any n:
+     max (SIZE_MAX, n) == SIZE_MAX and max (n, SIZE_MAX) == SIZE_MAX.  */
+  return (size1 >= size2 ? size1 : size2);
+}
+
+/* Multiplication of a count with an element size, with overflow check.
+   The count must be >= 0 and the element size must be > 0.
+   This is a macro, not an inline function, so that it works correctly even
+   when N is of a wider tupe and N > SIZE_MAX.  */
+#define xtimes(N, ELSIZE) \
+  ((N) <= SIZE_MAX / (ELSIZE) ? (size_t) (N) * (ELSIZE) : SIZE_MAX)
+
+/* Check for overflow.  */
+#define size_overflow_p(SIZE) \
+  ((SIZE) == SIZE_MAX)
+/* Check against overflow.  */
+#define size_in_bounds_p(SIZE) \
+  ((SIZE) != SIZE_MAX)
+
+#endif /* _XSIZE_H */
diff --git a/scripts/config.rpath b/scripts/config.rpath
new file mode 100755
index 0000000..4db13e5
--- /dev/null
+++ b/scripts/config.rpath
@@ -0,0 +1,548 @@
+#! /bin/sh
+# Output a system dependent set of variables, describing how to set the
+# run time search path of shared libraries in an executable.
+#
+#   Copyright 1996-2003 Free Software Foundation, Inc.
+#   Taken from GNU libtool, 2001
+#   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+#   As a special exception to the GNU General Public License, if you
+#   distribute this file as part of a program that contains a
+#   configuration script generated by Autoconf, you may include it under
+#   the same distribution terms that you use for the rest of that program.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# The environment variables CC, GCC, LDFLAGS, LD, with_gnu_ld
+# should be set by the caller.
+#
+# The set of defined variables is at the end of this script.
+
+# Known limitations:
+# - On IRIX 6.5 with CC="cc", the run time search patch must not be longer
+#   than 256 bytes, otherwise the compiler driver will dump core. The only
+#   known workaround is to choose shorter directory names for the build
+#   directory and/or the installation directory.
+
+# All known linkers require a `.a' archive for static linking (except M$VC,
+# which needs '.lib').
+libext=a
+shrext=.so
+
+host="$1"
+host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+# Code taken from libtool.m4's AC_LIBTOOL_PROG_COMPILER_PIC.
+
+wl=
+if test "$GCC" = yes; then
+  wl='-Wl,'
+else
+  case "$host_os" in
+    aix*)
+      wl='-Wl,'
+      ;;
+    mingw* | pw32* | os2*)
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      wl='-Wl,'
+      ;;
+    irix5* | irix6* | nonstopux*)
+      wl='-Wl,'
+      ;;
+    newsos6)
+      ;;
+    linux*)
+      case $CC in
+        icc|ecc)
+          wl='-Wl,'
+          ;;
+        ccc)
+          wl='-Wl,'
+          ;;
+      esac
+      ;;
+    osf3* | osf4* | osf5*)
+      wl='-Wl,'
+      ;;
+    sco3.2v5*)
+      ;;
+    solaris*)
+      wl='-Wl,'
+      ;;
+    sunos4*)
+      wl='-Qoption ld '
+      ;;
+    sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+      wl='-Wl,'
+      ;;
+    sysv4*MP*)
+      ;;
+    uts4*)
+      ;;
+  esac
+fi
+
+# Code taken from libtool.m4's AC_LIBTOOL_PROG_LD_SHLIBS.
+
+hardcode_libdir_flag_spec=
+hardcode_libdir_separator=
+hardcode_direct=no
+hardcode_minus_L=no
+
+case "$host_os" in
+  cygwin* | mingw* | pw32*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+esac
+
+ld_shlibs=yes
+if test "$with_gnu_ld" = yes; then
+  case "$host_os" in
+    aix3* | aix4* | aix5*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+        ld_shlibs=no
+      fi
+      ;;
+    amigaos*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      # Samuel A. Falvo II <kc5tja@dolphin.openprojects.net> reports
+      # that the semantics of dynamic libraries on AmigaOS, at least up
+      # to version 4, is to share data among multiple programs linked
+      # with the same dynamic library.  Since this doesn't match the
+      # behavior of shared libraries on other platforms, we can use
+      # them.
+      ld_shlibs=no
+      ;;
+    beos*)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    cygwin* | mingw* | pw32*)
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      if $LD --help 2>&1 | grep 'auto-import' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    netbsd*)
+      ;;
+    solaris* | sysv5*)
+      if $LD -v 2>&1 | grep 'BFD 2\.8' > /dev/null; then
+        ld_shlibs=no
+      elif $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    sunos4*)
+      hardcode_direct=yes
+      ;;
+    *)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+  esac
+  if test "$ld_shlibs" = yes; then
+    # Unlike libtool, we use -rpath here, not --rpath, since the documented
+    # option of GNU ld is called -rpath, not --rpath.
+    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  fi
+else
+  case "$host_os" in
+    aix3*)
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes; then
+        # Neither direct hardcoding nor static linking is supported with a
+        # broken collect2.
+        hardcode_direct=unsupported
+      fi
+      ;;
+    aix4* | aix5*)
+      if test "$host_cpu" = ia64; then
+        # On IA64, the linker does run time linking by default, so we don't
+        # have to do anything special.
+        aix_use_runtimelinking=no
+      else
+        aix_use_runtimelinking=no
+        # Test if we are trying to use run time linking or normal
+        # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+        # need to do runtime linking.
+        case $host_os in aix4.[23]|aix4.[23].*|aix5*)
+          for ld_flag in $LDFLAGS; do
+            if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+              aix_use_runtimelinking=yes
+              break
+            fi
+          done
+        esac
+      fi
+      hardcode_direct=yes
+      hardcode_libdir_separator=':'
+      if test "$GCC" = yes; then
+        case $host_os in aix4.[012]|aix4.[012].*)
+          collect2name=`${CC} -print-prog-name=collect2`
+          if test -f "$collect2name" && \
+            strings "$collect2name" | grep resolve_lib_name >/dev/null
+          then
+            # We have reworked collect2
+            hardcode_direct=yes
+          else
+            # We have old collect2
+            hardcode_direct=unsupported
+            hardcode_minus_L=yes
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_libdir_separator=
+          fi
+        esac
+      fi
+      # Begin _LT_AC_SYS_LIBPATH_AIX.
+      echo 'int main () { return 0; }' > conftest.c
+      ${CC} ${LDFLAGS} conftest.c -o conftest
+      aix_libpath=`dump -H conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      if test -z "$aix_libpath"; then
+        aix_libpath=`dump -HX64 conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      fi
+      if test -z "$aix_libpath"; then
+        aix_libpath="/usr/lib:/lib"
+      fi
+      rm -f conftest.c conftest
+      # End _LT_AC_SYS_LIBPATH_AIX.
+      if test "$aix_use_runtimelinking" = yes; then
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+      else
+        if test "$host_cpu" = ia64; then
+          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+        else
+          hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        fi
+      fi
+      ;;
+    amigaos*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      # see comment about different semantics on the GNU ld section
+      ld_shlibs=no
+      ;;
+    bsdi4*)
+      ;;
+    cygwin* | mingw* | pw32*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      libext=lib
+      ;;
+    darwin* | rhapsody*)
+      if $CC -v 2>&1 | grep 'Apple' >/dev/null ; then
+        hardcode_direct=no
+      fi
+      ;;
+    dgux*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    freebsd1*)
+      ld_shlibs=no
+      ;;
+    freebsd2.2*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    freebsd2*)
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    freebsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    hpux9*)
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      ;;
+    hpux10* | hpux11*)
+      if test "$with_gnu_ld" = no; then
+        case "$host_cpu" in
+          hppa*64*)
+            hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+            hardcode_libdir_separator=:
+            hardcode_direct=no
+            ;;
+          ia64*)
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_direct=no
+            # hardcode_minus_L: Not really in the search PATH,
+            # but as the default location of the library.
+            hardcode_minus_L=yes
+            ;;
+          *)
+            hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+            hardcode_libdir_separator=:
+            hardcode_direct=yes
+            # hardcode_minus_L: Not really in the search PATH,
+            # but as the default location of the library.
+            hardcode_minus_L=yes
+            ;;
+        esac
+      fi
+      ;;
+    irix5* | irix6* | nonstopux*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    netbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    newsos6)
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    openbsd*)
+      hardcode_direct=yes
+      if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+        hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      else
+        case "$host_os" in
+          openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+            hardcode_libdir_flag_spec='-R$libdir'
+            ;;
+          *)
+            hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+            ;;
+        esac
+      fi
+      ;;
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      ;;
+    osf3*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    osf4* | osf5*)
+      if test "$GCC" = yes; then
+        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+        # Both cc and cxx compiler support -rpath directly
+        hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      hardcode_libdir_separator=:
+      ;;
+    sco3.2v5*)
+      ;;
+    solaris*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      ;;
+    sunos4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    sysv4)
+      case $host_vendor in
+        sni)
+          hardcode_direct=yes # is this really true???
+          ;;
+        siemens)
+          hardcode_direct=no
+          ;;
+        motorola)
+          hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+          ;;
+      esac
+      ;;
+    sysv4.3*)
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+        ld_shlibs=yes
+      fi
+      ;;
+    sysv4.2uw2*)
+      hardcode_direct=yes
+      hardcode_minus_L=no
+      ;;
+    sysv5OpenUNIX8* | sysv5UnixWare7* |  sysv5uw[78]* | unixware7*)
+      ;;
+    sysv5*)
+      hardcode_libdir_flag_spec=
+      ;;
+    uts4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    *)
+      ld_shlibs=no
+      ;;
+  esac
+fi
+
+# Check dynamic linker characteristics
+# Code taken from libtool.m4's AC_LIBTOOL_SYS_DYNAMIC_LINKER.
+libname_spec='lib$name'
+case "$host_os" in
+  aix3*)
+    ;;
+  aix4* | aix5*)
+    ;;
+  amigaos*)
+    ;;
+  beos*)
+    ;;
+  bsdi4*)
+    ;;
+  cygwin* | mingw* | pw32*)
+    shrext=.dll
+    ;;
+  darwin* | rhapsody*)
+    shrext=.dylib
+    ;;
+  dgux*)
+    ;;
+  freebsd1*)
+    ;;
+  freebsd*)
+    ;;
+  gnu*)
+    ;;
+  hpux9* | hpux10* | hpux11*)
+    case "$host_cpu" in
+      ia64*)
+        shrext=.so
+        ;;
+      hppa*64*)
+        shrext=.sl
+        ;;
+      *)
+        shrext=.sl
+        ;;
+    esac
+    ;;
+  irix5* | irix6* | nonstopux*)
+    case "$host_os" in
+      irix5* | nonstopux*)
+        libsuff= shlibsuff=
+        ;;
+      *)
+        case $LD in
+          *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") libsuff= shlibsuff= ;;
+          *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") libsuff=32 shlibsuff=N32 ;;
+          *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") libsuff=64 shlibsuff=64 ;;
+          *) libsuff= shlibsuff= ;;
+        esac
+        ;;
+    esac
+    ;;
+  linux*oldld* | linux*aout* | linux*coff*)
+    ;;
+  linux*)
+    ;;
+  netbsd*)
+    ;;
+  newsos6)
+    ;;
+  nto-qnx)
+    ;;
+  openbsd*)
+    ;;
+  os2*)
+    libname_spec='$name'
+    shrext=.dll
+    ;;
+  osf3* | osf4* | osf5*)
+    ;;
+  sco3.2v5*)
+    ;;
+  solaris*)
+    ;;
+  sunos4*)
+    ;;
+  sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+    ;;
+  sysv4*MP*)
+    ;;
+  uts4*)
+    ;;
+esac
+
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
+shlibext=`echo "$shrext" | sed -e 's,^\.,,'`
+escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+
+sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+
+# How to pass a linker flag through the compiler.
+wl="$escaped_wl"
+
+# Static library suffix (normally "a").
+libext="$libext"
+
+# Shared library suffix (normally "so").
+shlibext="$shlibext"
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
+
+# Whether we need a single -rpath flag with a separated argument.
+hardcode_libdir_separator="$hardcode_libdir_separator"
+
+# Set to yes if using DIR/libNAME.so during linking hardcodes DIR into the
+# resulting binary.
+hardcode_direct="$hardcode_direct"
+
+# Set to yes if using the -LDIR flag during linking hardcodes DIR into the
+# resulting binary.
+hardcode_minus_L="$hardcode_minus_L"
+
+EOF
--
libgit2 0.24.0