New file. Test program for rfc2047 decoder functions.

+/* GNU Mailutils -- a suite of utilities for electronic mail
+   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+
+   GNU Mailutils 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.
+
+   GNU Mailutils 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 GNU Mailutils; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#include <mailutils/mailutils.h>
+
+void
+print (char *p, int printable)
+{
+  for (; *p; p++)
+    {
+      if (printable && *p != '\n' && !isprint (*p))
+	printf ("\\%03o", *(unsigned char *) p);
+      else
+	putchar (*p);
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  char buf[256];
+  int c, printable = 0;
+
+  while ((c = getopt (argc, argv, "p")) != EOF)
+    switch (c)
+      {
+      case 'p':
+	printable = 1;
+	break;
+
+      default:
+	exit (1);
+      }
+
+  while (fgets (buf, sizeof (buf), stdin))
+    {
+      char *p = NULL;
+      int rc, len;
+
+      len = strlen (buf);
+      if (len > 0 && buf[len - 1] == '\n')
+	buf[len - 1] = 0;
+      rc = rfc2047_decode ("iso-8859-1", buf, &p);
+      printf ("%s=> %s\n", buf, mu_strerror (rc));
+      if (p)
+	print (p, printable);
+      putchar ('\n');
+      free (p);
+    }      
+}