fixed #2072 modify cc.Node, cc.kmMat4Assign codes for Javascript performance optimization.  MV * P operation move to Shader.
Merge branch 'master' of https://github.com/cocos2d/cocos2d-html5 into Iss2072_JSPerformanceImprovement
fixed #2072 optimize performance for javascript
Merge branch 'master' of Cocos2d-html5 into Iss2072_JSPerformanceImprovement
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2072_JSPerformanceImprovement
fixed #2072 add a shader to ShaderCache and replace some functions to the latest functions
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2072_JSPerformanceImprovement
fixed #2072 create a local variable access to class properties.
fixed #2072 remove "this._super" from cc.Node, cc.Sprite, cc.LabelTTF and replace Deprecated function
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2072_JSPerformanceImprovement
fixed #2072 debugging a bug about zOrder of cc.SpriteBatchNode
fixed #2072 Delete "cc.SHADER_POSITION_TEXTURE_COLOR_BATCHNODE" shader
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2072_JSPerformanceImprovement
fixed #2072 optimize performance for Action
Merge pull request #950 from dingpinglv/Iss2072_JSPerformanceImprovement

fixed #2072 Improvement performance for Cocos2d-html5