Allow animation of node properties to be individually enabled or disabled.
Removed animation of Euler rotation angles as unsuitable for interpolation.
Upgrade PVRT library to version 3.0r2.

Upgrade PVRT library to version 3.0r2 and strip it to the minimum required files.
Refactor CC3GLProgram and support cocos2d 2.1rc0a.

Refactor CC3GLProgram out from under CCGLProgram to better support cocos3d
requirements. Adjust install_cocos3d.sh script for cocos2d 2.1rc0a folders.
Fix issues caused by cocos2d ivar renaming. Implement new CCRGBAProtocol methods.
Fix CC3Billboard blend conflict.