cocos2d/cocos2d-x — pull request #3532 by dumganhar (2013-09-03 10:24:47+00:00)
Title: Don't merge, first commit of new event system, it's for preview only.

The brief of this design is at Google Document (https://docs.google.com/a/cocos2d-x.org/document/d/1rd59Ysp4R8iVelIDQmOOFAVQE8gek2bzBW_kPbTlnQc).