[mutter] Bump version to 3.9.1

[Florian Müllner <fmuellner src gnome org>]

commit 1ffe1eae4d6357b3466fd3c7073f84e44746452a
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Apr 30 23:28:26 2013 +0200

    Bump version to 3.9.1
    
    Update NEWS.

 NEWS         |    8 ++++++++
 configure.ac |    2 +-
 2 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 5e66a89..ddbdc96 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+3.9.1
+=====
+* Fix miscellaneous memory leaks [Pavel; #698710]
+* Misc fixes and cleanups [Stef, Simon; #698179, #697758]
+
+Contributors:
+  Simon McVittie, Pavel Vasin, Stef Walter
+
 3.8.1
 =====
 * Fix crash when getting default font [Bastien; #696814]
diff --git a/configure.ac b/configure.ac
index 85164ba..b687b5c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 AC_PREREQ(2.50)
 
 m4_define([mutter_major_version], [3])
-m4_define([mutter_minor_version], [8])
+m4_define([mutter_minor_version], [9])
 m4_define([mutter_micro_version], [1])
 
 m4_define([mutter_version],