MP1-4327 : Fix for FastSwitch after hold/press too fast Page_UP or Page_DOWN key when changing Vis.
MP1-4346 : Scaling of 3D movies in TAB-Mode was scaled wrong if ViewModeSwitcher created a vertical overscan (by Marcus Venturi)
Fixed ViewModeSwitcher problems reported by wouter1971 that were not fixed by the first approach.
MP1-4346 : Fixed memory leak in Auto3D mode that caused dropped frames and high CPU usage / removed superfluous code.
Merge remote-tracking branch 'remotes/origin/master' into MP1-4327-BUG-Fast_switching_visualization_can_lead_to_crash
MP1-4327 : Cleanup code.
Merge remote-tracking branch 'remotes/origin/master' into MP1-4327-BUG-Fast_switching_visualization_can_lead_to_crash

Conflicts:
	mediaportal/Core/MusicPlayer/BASS/BassAudioEngine.cs
Merge remote-tracking branch 'remotes/origin/MP1-4346-BUG-Fix_3D_movies_when_using_ViewModeSwitcher'
Merge remote-tracking branch 'remotes/origin/MP1-4327-BUG-Fast_switching_visualization_can_lead_to_crash'