Update _bPlaying on CCActionObject.

The method CCActionObject::isPlaying() return the state of the member var _bPlaying,
which is initially declared false and never updated. The change updates this variable
across the play, pause, stop and end states of the action.
Merge branch 'v3luaruntime' of https://github.com/chuanweizhang2013/cocos2d-x into v3luaruntime
add config window top support
add getplatform function
use fileName for _actionDic key
Added Light
Added Light Class
GLProgram Added Light Shader
GLProgram Added Normal Matrix
Fixed GLProgram
Added Light Test
Added Point Light
Finished Point Light
Finished Directional Light
Finished Spot Light
Fixed Android compiled Problem
Shader: Light struct modification
Finished Light And Test
deleted redundant code
Replace Tab Format
Light Shader modification for Android
Repaired the errors of Shader PassValue On Android
Light modification
optimization
Replace Tab Format
Added No Normal Shader