Log Message:
Update to phonon-backend-vlc 0.7.2

* Initialize libvlc with appropriate arguments on OS X
* Prevent libvlc 2.2 argument warnings by not using the deprecated
  --album-art argument when building against 2.2. This argument will be
  removed entirely in a future feature release as its presence only
  reflected the libvlc default behavior anyway.
* Ensure playback is terminated when encountering an invalid queued
  MediaSource.
* Prevent a crash when when GUIs call setCdTrack on a not-yet-ready
  MediaPlayer.