issue #3945: Refactor basic data structures for cc.Rect
issue #3945: Refactor basic data structures for cc.Size
issue #3945: Refactor basic data structures for Point.
Merge
Merge branch 'develop-3.0' of https://github.com/cocos2d/cocos2d-html5 into develop-3.0-baseData
issue #3945: Refactor basic data structures about cc.color. (1)
Merge pull request #1576 from xingsenma/develop-3.0-baseData

issue #3945: Refactor basic data structures