Want to make QtMultimediaKit finally integrate. Disabled some tests and ensured that tests depending on private interfaces are only built if these interfaces are enabled. Change-Id: I65f0ff5ea23d704cf3c2626fe4191d7d6460e46f Reviewed-on: http://codereview.qt.nokia.com/992 Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com> Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>