QtIFW

Implement cmd option to dump binary content into given dir.

Reuse already existing functionality, just fix the hard coded
"repository" path name. Also check if we are running offline only,
as otherwise there will be no data section.

Change-Id: Iac45d89822fceee9e527afe0dc9eb589e39e16e7
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>