Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into HEAD

Conflicts:
	cocos/2d/CCLabel.cpp
	cocos/2d/CCLabel.h
	cocos/2d/CCLabelBMFont.cpp
	cocos/2d/CCLabelBMFont.h
	cocos/2d/CCLayer.cpp
	cocos/2d/CCLayer.h
	cocos/2d/CCNode.cpp
	extensions/GUI/CCControlExtension/CCControl.cpp
	extensions/GUI/CCControlExtension/CCControlButton.cpp
	extensions/GUI/CCControlExtension/CCScale9Sprite.cpp
	tools/tojs/cocos2dx.ini