QtIFW

Extend the app to be able to copy only a new maintenance tool.

This is now the default, as all installers out there put the
binary data into a separate file.

Change-Id: I1fe55613aad7200e6c6b658b5ab2179cc8ddf0a6
Reviewed-on: http://codereview.qt-project.org/5638
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Tim Jenssen <tim.jenssen@nokia.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@nokia.com>