[gtk+] util: Add missing git.mk include

[Jasper St. Pierre <jstpierre src gnome org>]

commit c4fc71058ad3f88628742c7abcca94392cdf9fb6
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Jun 16 10:42:22 2014 -0400

    util: Add missing git.mk include

 util/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/util/Makefile.am b/util/Makefile.am
index 887faa9..e8cf8fd 100644
--- a/util/Makefile.am
+++ b/util/Makefile.am
@@ -9,3 +9,5 @@ extract-strings$(EXEEXT): $(extract_strings_sources)
        $(AM_V_CCLD)$(CC_FOR_BUILD) $(extract_strings_cppflags) $(CPPFLAGS_FOR_BUILD) 
$(extract_strings_cflags) $(CFLAGS_FOR_BUILD) $^ $(LDFLAGS_FOR_BUILD) $(extract_strings_ldadd) 
$(LIBS_FOR_BUILD) -o $@
 
 noinst_PROGRAMS = extract-strings
+
+-include $(top_srcdir)/git.mk