[gitg] Bump requirements for GTK+

[Yosef Or Boczko <yoseforb src gnome org>]

commit bc2c61bdb458b9a217211712139b013ec4f2ac46
Author: Yosef Or Boczko <yoseforb src gnome org>
Date:   Wed Mar 26 04:20:38 2014 +0200

    Bump requirements for GTK+
    
    For headerbar in dialogs and for popover.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=727068

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index daf0ce5..2a5537d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,7 +86,7 @@ AC_DEFINE_UNQUOTED(GITG_LIBDIR,"$GITG_LIBDIR", [lib dir])
 AC_CHECK_LIB([m], [sinf])
 
 GLIB_REQUIRED_VERSION=2.38
-GTK_REQUIRED_VERSION=3.10.0
+GTK_REQUIRED_VERSION=3.12.0
 GTKSOURCEVIEW_REQUIRED_VERSION=3.10
 INTROSPECTION_REQUIRED=0.10.1
 WEBKITGTK_REQUIRED_VERSION=2.2