Make gettext have its own definition.

diff -ur gettext-0.14.6/gettext-tools/lib/error.h gettext-0.14.6-patched/gettext-tools/lib/error.h

--- gettext-0.14.6/gettext-tools/lib/error.h	2005-05-20 16:03:42.000000000 -0500

+++ gettext-0.14.6-patched/gettext-tools/lib/error.h	2007-01-13 20:57:24.422168053 -0600

@@ -50,7 +50,7 @@

 /* If NULL, error will flush stdout, then print on stderr the program

    name, a colon and a space.  Otherwise, error will call this

    function without parameters instead.  */

-extern DLL_VARIABLE void (*error_print_progname) (void);

+void (*error_print_progname) (void);

 /* This variable is incremented each time `error' is called.  */

 extern DLL_VARIABLE unsigned int error_message_count;