Log Message:
Update to phonon-backend-gstreamer 4.8.0

Switched from GStreamer 0.10 to GStreamer 1.0
Correct frame format to not result in a blue tint when using Phonon
GStreamer in a QGraphicsView (e.g. Gwenview)
Prevent a crash in AudioDataOutput when channel count changes during
playback
Fixed subtitles auto-loading
Fixed a typo in AudioDataOutput::processBuffer that could cause a crash
under certain conditions
Fixed various memory leaks and optimized memory management