QtIFW

Fix Mac Qt framework id changing

Fix the case where Qt framework was not udpated with install_name_tool if
the framework name contained other numbers than 3 (e.g. QtV8 and QtQuick1).

Change-Id: I189c5d650982263ff27a3e18a2e0bd98983c5ce2
Reviewed-by: Toby Tomkins <toby.tomkins@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>
Reviewed-by: Niels Weber <niels.weber@digia.com>