[mutter] Bump version to 3.15.3

[Florian Müllner <fmuellner src gnome org>]

commit 69079b3b48ba111ee1c1b5e5aabdc5087998bf9f
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Dec 19 11:57:12 2014 +0100

    Bump version to 3.15.3
    
    Update NEWS.

 NEWS         |   11 +++++++++++
 configure.ac |    2 +-
 2 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index f09c2f5..3ae8eab 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+3.15.3
+======
+* Don't leave left-over frames queued [Owen; #738686]
+* Set CRTC configuration even if it might be redundant [Rui; #740838]
+
+Contributors:
+  Rui Matos, Jasper St. Pierre, Rico Tzschichholz, Owen W. Taylor
+
+Translations:
+  Trần Ngọc Quân [vi], Muhammet Kara [tr]
+
 3.15.2
 ======
 * Don't enable hiDPI on monitors with broken EDID [Bastien; #734839]
diff --git a/configure.ac b/configure.ac
index 9ba3f68..a3724d9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@ AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
 m4_define([mutter_minor_version], [15])
-m4_define([mutter_micro_version], [2])
+m4_define([mutter_micro_version], [3])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])