Remove HAVE_DECL_PROGRAM_INVOCATION_NAME hack, newer argp does that itself

@@ -352,13 +352,6 @@ AC_CHECK_MEMBERS([struct tm.tm_zone, struct tm.tm_gmtoff, struct tm.tm_isdst],
 
 
 dnl Check for working functions
 dnl Check for working functions
 
 
-# Dirty hack: make sure HAVE_DECL_PROGRAM_INVOCATION_NAME is defined
-# This must be done before gl_ARGP, which attempts
-# an AC_CHECK_DECLS([program_invocation_name), because autoconf machinery
-# gives preference to the first definition, in spite of what the comment
-# at autoconf/status.m4:574 sais
-AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_NAME], 1)
-
 dnl Escape defuns that force automake to add their arguments
 dnl Escape defuns that force automake to add their arguments
 dnl to LIBOBJS.
 dnl to LIBOBJS.
 dnl All dependencies has been handled by gnulib-sync.
 dnl All dependencies has been handled by gnulib-sync.
@@ -442,40 +435,9 @@ dnl Check for libraries
 # The gnulib version fixes a number of bugs and provides new features,
 # The gnulib version fixes a number of bugs and provides new features,
 # so currently we force to use it. This may change when gnulib and glibc
 # so currently we force to use it. This may change when gnulib and glibc
 # are synchronized.
 # are synchronized.
-MU_LIBOBJ(pin)
 MU_HEADER(getopt.h,getopt_.h)
 MU_HEADER(getopt.h,getopt_.h)
 MU_HEADER(argp.h)
 MU_HEADER(argp.h)
 
 
-AC_MSG_CHECKING(whether extern program_invocation_name is present)
-AC_TRY_COMPILE([#include <argp.h>
-#include <errno.h>],
-[ program_invocation_name = "test"; ],
-[AC_DEFINE(PROGRAM_INVOCATION_NAME_DECLARED,1,
-           [Define if program_invocation_name is declared in argp.h])
- AC_MSG_RESULT(yes)],
-[AC_MSG_RESULT(no)])
-
-AH_BOTTOM([
-#ifndef PROGRAM_INVOCATION_NAME_DECLARED
-extern char *program_invocation_short_name;
-extern char *program_invocation_name;
-#endif])
-
-
-AC_MSG_CHECKING(whether program_invocation_name is declared)
-AC_TRY_COMPILE([#include <argp.h>
-#include <errno.h>],
-[
-#ifndef PROGRAM_INVOCATION_NAME_DECLARED
-	extern char *program_invocation_name;
-#endif
-	program_invocation_name = "test";
-],
-[AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME,1,
-           [Define if the variable program_invocation_name exists])
- AC_MSG_RESULT(yes)],
-[AC_MSG_RESULT(no)])
-
 AH_BOTTOM([
 AH_BOTTOM([
 /* program_name is used by lib/error.c */
 /* program_name is used by lib/error.c */
 #define program_name program_invocation_name
 #define program_name program_invocation_name