[gnome-shell] Bump version to 3.21.1

[Florian Müllner <fmuellner src gnome org>]

commit 296b61b61c623b6a2a1011618ab1300041f45840
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Apr 27 22:53:27 2016 +0200

    Bump version to 3.21.1
    
    Update NEWS.

 NEWS         |   13 +++++++++++++
 configure.ac |    4 ++--
 2 files changed, 15 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index 8b6860b..256baa1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,16 @@
+3.21.1
+======
+* Save screencasts in HOME if XDG_VIDEO_DIR doesn't exist [Florian; #765015]
+* Don't show orientation lock when g-s-d won't rotate [Florian; #765267]
+* Misc. bug fixes [Heiher, Florian, Marek, Rui; #722752, #765061, #763068,
+  #765607, #757676, #760439]
+
+Contributors:
+  Heiher, Marek Chalupa, Rui Matos, Florian Müllner
+
+Translations:
+  Arash Mousavi [fa], Kristjan SCHMIDT [eo], GNOME Translation Robot [gd]
+
 3.20.1
 ======
 * Plug a memory leak [Aaron; #735705]
diff --git a/configure.ac b/configure.ac
index c69629c..699ff08 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ(2.63)
-AC_INIT([gnome-shell],[3.20.1],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell],[gnome-shell])
+AC_INIT([gnome-shell],[3.21.1],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell],[gnome-shell])
 AX_IS_RELEASE([git-directory])
 
 AC_CONFIG_HEADERS([config.h])
@@ -77,7 +77,7 @@ AC_MSG_RESULT($enable_systemd)
 CLUTTER_MIN_VERSION=1.21.5
 GOBJECT_INTROSPECTION_MIN_VERSION=1.45.4
 GJS_MIN_VERSION=1.39.0
-MUTTER_MIN_VERSION=3.20.0
+MUTTER_MIN_VERSION=3.21.1
 GTK_MIN_VERSION=3.15.0
 GIO_MIN_VERSION=2.45.3
 LIBECAL_MIN_VERSION=3.5.3