Adds version number
Revert "Corrects children position in vertical CCLayoutBox"

This reverts commit df9cbba005db9033fb1104c1442ad3f39f15409b.
Merge branch 'develop-v3' of github:cocos2d/cocos2d-iphone into develop-v3
Use alpha test shader in the vertex-z test.
Merge branch 'develop-v3' into render-queue
Shader compilation changes.
Uniform state.
Optimization