[clutter-gtk] Bump up the Clutter required version

[Emmanuele Bassi <ebassi src gnome org>]

commit 532aa93d7600ddd39c837fde68c31ba3b727a5d3
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Jul 5 22:48:45 2013 +0100

    Bump up the Clutter required version

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5d3600f..f45802c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -82,7 +82,7 @@ AC_HEADER_STDC
 AC_CHECK_LIBM
 AC_SUBST(LIBM)
 
-m4_define([clutter_req_version], [1.13.7])
+m4_define([clutter_req_version], [1.15.1])
 m4_define([gtk_req_version], [3.6.0])
 
 PKG_CHECK_MODULES([CLUTTER_GTK_DEPS], [clutter-1.0 >= clutter_req_version gtk+-3.0 >= gtk_req_version])