Move QtVersionFactory to QtSupport module

After this is done, QbsProjectManager/CMakeProjectManager will be able to
have full Qt support work without having to depend on Qt4ProjectManager.
It's should belong here.

Change-Id: I577d47cb8a40eb697aa862fbec36c56ff05004f0
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Android: Rework AndroidPacakgeInstallationStep

It derived from MakeStep which is a rather odd base class for it, make
it derive from AbstractProcessStep instead. Also implement a config
widget for it. That one does nothing, but the old one didn't do
anything interesting either.

Change-Id: I76c2311580dbb62d08524fe0f77e803fd52ffbf4
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Reviewed-by: BogDan Vatra <bogdan@kde.org>