Add upstream patch fixing build on Solaris 9 with Sun Studio 11.

Suggested by Stephen Nelson-Smith <sanelson@gmail.com> on pkgsrc-users.

devel/m4/distinfo

@@ -1,8 +1,9 @@
-$NetBSD: distinfo,v 1.34 2012/01/31 01:12:46 christos Exp $
+$NetBSD: distinfo,v 1.35 2012/04/27 21:01:41 wiz Exp $
 
 SHA1 (m4-1.4.16.tar.gz) = 44b3ed8931f65cdab02aee66ae1e49724d2551a4
 RMD160 (m4-1.4.16.tar.gz) = 9b161898b9fb2fc44614e644a0e3bdab3ff1328b
 Size (m4-1.4.16.tar.gz) = 1657870 bytes
 SHA1 (patch-aa) = ef316620b49f78f46e9dea47032b0141814c1f43
 SHA1 (patch-ab) = b29840365e983623bce64e84ceab3504b8270b32
 SHA1 (patch-ac) = 7bd9164c659727a906ef54a2f1027e9fd19315ba
+SHA1 (patch-lib_verror.h) = 4c50ab0bc90a6324845e145bbe140836179ca8c9

devel/m4/patches/patch-lib_verror.h

@@ -0,0 +1,41 @@
+$NetBSD: patch-lib_verror.h,v 1.1 2012/04/27 21:01:41 wiz Exp $
+
+2011-03-20  Bruno Haible  <bruno@clisp.org>
+
+       verror: Fix compilation error introduced on 2011-02-13.
+       * lib/verror.h (verror, verror_at_line): Use _GL_ATTRIBUTE_FORMAT macro
+       instead of __attribute__.
+       Reported by Tom G. Christensen <tgc@jupiterrise.com>.
+
+--- lib/verror.h.orig	2011-03-01 16:39:30.000000000 +0000
++++ lib/verror.h
+@@ -17,9 +17,10 @@
+ #ifndef _VERROR_H
+ #define _VERROR_H 1
+
+-#include "error.h"
+ #include <stdarg.h>
+
++#include "error.h" /* for _GL_ATTRIBUTE_FORMAT */
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+@@ -32,7 +33,7 @@ extern "C" {
+
+ extern void verror (int __status, int __errnum, const char *__format,
+                     va_list __args)
+-     __attribute__ ((__format__ (__printf__, 3, 0)));
++     _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 0));
+
+ /* Print a message with `vfprintf (stderr, FORMAT, ARGS)';
+    if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
+@@ -44,7 +45,7 @@ extern void verror (int __status, int __
+ extern void verror_at_line (int __status, int __errnum, const char *__fname,
+                             unsigned int __lineno, const char *__format,
+                             va_list __args)
+-     __attribute__ ((__format__ (__printf__, 5, 0)));
++     _GL_ATTRIBUTE_FORMAT ((__printf__, 5, 0));
+
+ #ifdef __cplusplus
+ }