Add changes-5.1.1 file

Change-Id: I9062104d41ad4a4af352dc6366f550c09b3d8ebd
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: I23fb0ae0d08e0cdcda7d17c70cb19f1e499e1475