Drop patch level from Qt / Kit version name in Qt Creator

Qt Creator assumes that a qt version/kit with the same 'id' is the
same, and therefore doesn't update the names after an update e.g. for
aut-generated kits.

Task-number: QTBUG-39749
Change-Id: I34c8888c6af8752c1951efa2d64681977b228135
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>