[mutter] Bump version to 3.18.0

[Florian Müllner <fmuellner src gnome org>]

commit 35729e8659cc99f45d3564c33d44a475f20d0060
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Sep 21 21:52:14 2015 +0200

    Bump version to 3.18.0
    
    Update NEWS.

 NEWS         |   10 ++++++++++
 configure.ac |    4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index 7b03004..31e88c5 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,13 @@
+3.18.0
+======
+* Misc. fixes [Florian, Jonas; #753434]
+
+Contributors:
+  Jonas Ådahl, Florian Müllner
+
+Translations:
+  Rūdolfs Mazurs [lv]
+
 3.17.92
 =======
 * Don't omit the background color for backgrounds that don't fill the screen
diff --git a/configure.ac b/configure.ac
index b4e8674..5e12a42 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 AC_PREREQ(2.62)
 
 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [17])
-m4_define([mutter_micro_version], [92])
+m4_define([mutter_minor_version], [18])
+m4_define([mutter_micro_version], [0])
 
 m4_define([mutter_version],
           [mutter_major_version.mutter_minor_version.mutter_micro_version])