Refactoring for Documentation

Rename DrawManager to CCDrawManager
Rename ccTMXTileFlags to CCTMXTileFlags.
Change public structure CCV3F_T2F to inernal.
Rename CCCArray to CCArray.
Bring enums into align with system.
Rename tOrientation to CCOrientation
Move cocos2d.menu_nodes namespace to cocos2d
Re-naming of namespace from cocos2d to Cocos2D