[gtk+] Bump version

[Matthias Clasen <matthiasc src gnome org>]

commit c91316a343d8bce8e27c6d1d7d8317d134ba9ad5
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 2 14:51:01 2013 -0400

    Bump version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f852cda..870d483 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@
 
 m4_define([gtk_major_version], [3])
 m4_define([gtk_minor_version], [9])
-m4_define([gtk_micro_version], [14])
+m4_define([gtk_micro_version], [15])
 m4_define([gtk_interface_age], [0])
 m4_define([gtk_binary_age],
           [m4_eval(100 * gtk_minor_version + gtk_micro_version)])