[gnome-shell] Bump version to 3.21.90

[Florian Müllner <fmuellner src gnome org>]

commit 2b8332df5ea57a15f7d65ee62bcc38e0117fd7c2
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Aug 19 22:16:00 2016 +0200

    Bump version to 3.21.90
    
    Update NEWS.

 NEWS         |   14 ++++++++++++++
 configure.ac |    4 ++--
 2 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index 2a8e2c4..1adf175 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,17 @@
+3.21.90
+=======
+* Improve on-screen keyboard on wayland [Carlos; #765009]
+* Misc. bug fixes [Florian; #769156, #769216, #769074]
+
+Contributors:
+  Carlos Garnacho, Florian Müllner
+
+Translations:
+  Fabio Tomat [fur], Tiago Santos [pt], Daniel Mustieles [es],
+  Bernd Homuth [de], Aurimas Černius [lt], Balázs Úr [hu],
+  Yosef Or Boczko [he], Jiri Grönroos [fi], Marek Cernocky [cs],
+  Muhammet Kara [tr], Enrico Nicoletto [pt_BR], Andika Triwidada [id]
+
 3.21.4
 ======
 * overview: Fix switching workspaces when scrolling on non-primary monitors
diff --git a/configure.ac b/configure.ac
index 3c02585..71bfe67 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ(2.63)
-AC_INIT([gnome-shell],[3.21.4],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell],[gnome-shell])
+AC_INIT([gnome-shell],[3.21.90],[https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-shell],[gnome-shell])
 AX_IS_RELEASE([git-directory])
 
 AC_CONFIG_HEADERS([config.h])
@@ -78,7 +78,7 @@ AC_MSG_RESULT($enable_systemd)
 CLUTTER_MIN_VERSION=1.21.5
 GOBJECT_INTROSPECTION_MIN_VERSION=1.49.1
 GJS_MIN_VERSION=1.39.0
-MUTTER_MIN_VERSION=3.21.4
+MUTTER_MIN_VERSION=3.21.90
 GTK_MIN_VERSION=3.15.0
 GIO_MIN_VERSION=2.45.3
 LIBECAL_MIN_VERSION=3.5.3