windeployqt: add a -dry-run option to simulate deployment

For some use cases, only output (not deployment) may be required. This
adds an option to only simulate deployment, without copying any files.

Change-Id: I5ed6fcfd802255f6c8d9091f547a1b64a4a614e5
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Assistant: Introduce a 'compact' display for the simple search

Setting the mode disables the Previous and Next buttons for the simple
search history. This is meant to be used e.g. in Qt Creator where the
horizontal space in the side bar is precious.

Change-Id: If13ffbf2656c471ceb10c5bb15e39166fedbcb85
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>