[gtk+] Bump version

[Matthias Clasen <matthiasc src gnome org>]

commit 99a6495d6cc9abc94883a05a5f5adfedc7977a27
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Feb 12 18:23:44 2015 -0500

    Bump version
    
    So apps can require 3.15.7 for new api.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7f886ae..53979d9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@
 
 m4_define([gtk_major_version], [3])
 m4_define([gtk_minor_version], [15])
-m4_define([gtk_micro_version], [6])
+m4_define([gtk_micro_version], [7])
 m4_define([gtk_interface_age], [0])
 m4_define([gtk_binary_age],
           [m4_eval(100 * gtk_minor_version + gtk_micro_version)])