Added getCurrentFrameNumber to AV Foundation media player
Added AVFVideoReader to process video frames from a movie file
AVFVideoWrapper added performance check to avoid retrieving the same frame buffer more than once
AVFVideo reder cleanup and query methods added
MediaPlayerAVF improvements in newFrame flag handling (now it is cleared when frame is retrieved, not in update)
APT: Movement video preloading working using AVFAssetReader to process frames and precalculate movement
Merge branch 'origin/0.2'
Warning clean up