Merge pull request #6767 from ricardoquesada/sprite_multiple_pass

multiple pass sprite
uniform sampler CC_Texture0 MUST NOT be defined on shaders

since it is a built-in.
Built-in uniforms MUST NOT be defined on shaders.
Basically all CC_ uniforms must be defined by cocos2d-x
Merge pull request #6768 from ricardoquesada/uniform_texture_0

uniform sampler CC_Texture0 MUST NOT be defined on shaders