contrib: gettext: fix misassumption about alloca

(cherry picked from commit 9e775fc6d67236e4dfef2f5928d2b5099e1f9466)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

contrib/src/gettext/alloca.patch

+    
+--- gettext/gettext-tools/libgrep/regex_internal.h.orig	2012-01-27 16:56:14.000000000 +0100
++++ gettext/gettext-tools/libgrep/regex_internal.h	2012-01-27 16:53:34.000000000 +0100
+@@ -455,7 +455,9 @@
+ #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
+ #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
+ 
++#ifdef HAVE_ALLOCA_H
+ #include <alloca.h>
++#endif
+ 
+ #ifndef _LIBC
+ # if HAVE_ALLOCA

contrib/src/gettext/rules.mak

@@ -15,6 +15,7 @@ $(TARBALLS)/gettext-$(GETTEXT_VERSION).tar.gz:
 
 gettext: gettext-$(GETTEXT_VERSION).tar.gz .sum-gettext
 	$(UNPACK)
+	$(APPLY) $(SRC)/gettext/alloca.patch
 ifdef HAVE_MACOSX
 	$(APPLY) $(SRC)/gettext/gettext-macosx.patch
 endif