[mutter] Bump version to 3.15.2

[Florian Müllner <fmuellner src gnome org>]

commit 00535b34b6a3cbab1df8824fd9c8970686e737a7
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Nov 27 13:23:57 2014 +0000

    Bump version to 3.15.2
    
    Update NEWS.

 NEWS         |   14 ++++++++++++++
 configure.ac |    2 +-
 2 files changed, 15 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index e67e0d3..f09c2f5 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,17 @@
+3.15.2
+======
+* Don't enable hiDPI on monitors with broken EDID [Bastien; #734839]
+* Prevent crash applying monitor config for a closed lid [Rui; #739450]
+* Fix "flicker" during startup transition [Ray; #740377]
+* Misc. bug fixes [Lan, Florian, Carlos; #731521, #740133, #738890]
+
+Contributors:
+  Emmanuele Bassi, Carlos Garnacho, Jonathon Jongsma, Ting-Wei Lan, Rui Matos,
+  Florian Müllner, Bastien Nocera, Jasper St. Pierre, Ray Strode
+
+Translations:
+  Kjartan Maraas [nb]
+
 3.15.1
 ======
 * Use GResources for theme loading [Cosimo; #736936]
diff --git a/configure.ac b/configure.ac
index 685784e..ee3ad73 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], [1])
+m4_define([mutter_micro_version], [2])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])