Compile without -qpa.
- Make Q_WS_QPA-#ifdefed sections the default in the code
- Replace some Q_WS_ by Q_OS_
- Add ### fixme for places that need checking
- Remove qpa conditionals from .pro files.
Change-Id: I6ea930afc0c236cc12a7b7e95f1b8a1c24b3a513
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>