[gnome-shell-extensions] Bump version to 3.21.4

[Florian Müllner <fmuellner src gnome org>]

commit aea1f5187a571e1aac579cf6c944ca21be2162ec
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jul 20 20:46:59 2016 +0200

    Bump version to 3.21.4
    
    To go along GNOME Shell 3.21.4.

 NEWS         |    3 +++
 configure.ac |    2 +-
 2 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index bad7bc2..b12425d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+3.21.4
+======
+* apps-menu: Fix entries from non-standard AppDir directories
 3.21.3
 ======
 * adjust to gnome-shell changes
diff --git a/configure.ac b/configure.ac
index 57d219f..c7e642c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ(2.63)
-AC_INIT([gnome-shell-extensions],[3.21.3],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell&component=extensions])
+AC_INIT([gnome-shell-extensions],[3.21.4],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell&component=extensions])
 
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([config])