Bumb maintenancetool version

We need to bump the IFW/maintenancetool version to ship the update
required for Qt Creator 2.8.0.

Change-Id: I67bd48431b56771d473df3f82a22ed14db9d2fe1
Reviewed-by: Niels Weber <niels.weber@digia.com>
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>