3D Video Improvements

[Liboicl]

I suggest several features to improve the handling of SBS (Side by side) 3D videos.
Such as:

• Ability to stream as 2D (Cut & Stretch)
• Ability to stream Anaglyphically
• List each mode as a different video

I have 3D videos in my collection, but do not have a 3D TV. I convert the videos to Anaglyph when I want to watch them. An on-the-fly conversion would be extremely convenient. On the other hand, often I would just rather watch it in 2D, but storing each version takes up more space than I'd like to allocate for movie storage.