Add "useDestAlpha" field to provider
Consumer require a provider that support useDestAlpha
Fix consumer's RGBA alpha blend
A alpha blender class is added to separate the alpha blend code from CMemSubPic.
BugFix: flipped subpic in consumer
BugFix: A false alarm would be triggered if consumer nilled the provider ref with disconnect.
BugFix: consumer alpha blend incorrect clipped out flipped sub
Enabled consumer options Flip picture/Flip subtitle
BugFix: leak at DirectVobFilter
Option interface: Add XyGetBin2. XyGetBin un-necessarily complicated memory allocation & deallocation.
Consumer displays some provider info (layout/cache) in OSD