[clutter/clutter-1.16] Bump the required Cogl version to 1.15.1

[Emmanuele Bassi <ebassi src gnome org>]

commit 2db5ae56cf50cf76065c381aab7a05a1695f2f12
Author: Neil Roberts <neil linux intel com>
Date:   Tue Jul 9 16:07:57 2013 +0100

    Bump the required Cogl version to 1.15.1
    
    The unstable Wayland API which Clutter is using has changed so it will
    soon no longer build with Cogl 1.14 when Wayland support is enabled.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=703877

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 05e8638..69a3307 100644
--- a/configure.ac
+++ b/configure.ac
@@ -136,7 +136,7 @@ AC_HEADER_STDC
 
 # required versions for dependencies
 m4_define([glib_req_version],           [2.37.3])
-m4_define([cogl_req_version],           [1.14.0])
+m4_define([cogl_req_version],           [1.15.1])
 m4_define([json_glib_req_version],      [0.12.0])
 m4_define([atk_req_version],            [2.5.3])
 m4_define([cairo_req_version],          [1.10])