All new animation code, please review.

CCBAnimationManager …
- Refactored animation playback to create keyframe action sequence on demand between any given keyframes
- PlaybackSpeed Property
- Uses scheduler to control actions independently from CCActionManager
- Time Seek methods 
- Manual simple sequence builder (e.g. frame animations)
- Cocos2D foundation CCAnimation style wrapper
- Refactored ivar naming inline with Cocos2D v3
- keyframe caching for extra performance
- Reverse animation code (negative playback speed)

CCAction*
- Refactored custom CCBActions into CCActions
- Fixed rotational skewing x/y bug when running in parallel
- Modified CCRotateTo to allow for a simple rotation without over thinking it. (SpriteBuilder compatible)
- Added additional copy methods for CCRotateTo
- Added copy methods for refactored ccbactions