make the video widget compatible with Qt 4.5 new paint engine
make the video widget compatible with Qt 4.5 new paint engine

svn path=/trunk/kdesupport/phonon/; revision=895759

sandsmark/phonon-visualization-gsoc,sandsmark/phonon-visualization-gsoc,sandsmark/phonon-visualization-gsoc,sandsmark/phonon-visualization-gsoc