[mutter] Bump version to 3.23.3

[Florian Müllner <fmuellner src gnome org>]

commit 46b86248337410df9c34cbba563dcf02920be38e
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Dec 15 16:41:00 2016 +0100

    Bump version to 3.23.3
    
    Update NEWS.

 NEWS         |   10 ++++++++++
 configure.ac |    2 +-
 2 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index ec67f62..e9a87a8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,13 @@
+3.23.3
+======
+* Fix frequent freezes in multihead setups on wayland [Rui; #774557]
+* Preserve root window mask on XSelectionRequest [Olivier; #776128]
+* Misc. bug fixes [Carlos, Florian, Rui, Olivier; #775478, #774891, #775986,
+  #776036]
+
+Contributors:
+  Olivier Fourdan, Carlos Garnacho, Rui Matos, Florian Müllner
+
 3.23.2
 ======
 * Stack docks below other windows on fullscreen monitors [Rui; #772937]
diff --git a/configure.ac b/configure.ac
index 6cec8d8..fea92d0 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], [23])
-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])