tools/wrc/wrc.c portability breakage

[Gerald Pfeifer]

The following patch broke portability of tools/wrc/wrc.c:

revision 1.18
  date: 2002/12/06 19:49:36;  author: julliard;  state: Exp;  lines: +78 -10
  Dimitrie O. Paun 
  Make wrc command line compatible with windres.

1) getopt() is supposed to to come from <unistd.h>, and <getopt.h> is
a non-standard header.

2) getopt_long() is non-portable (and does not exist on FreeBSD, for
example).

The man page for getopt() clearly shows that, BTW:

#define _GNU_SOURCE
   #include <getopt.h>

Would you mind fixing this problem?

Thanks,
Gerald