Merge pull request #1 from skyblue/for-quick-cocos2d-x-2.1.1

 add  tolua  CCLayer::setTouchPriority()  &&  CCLayer:: getTouchPriority...
remove unused platforms
add multi-touches touch id
Merge branch 'for-quick-cocos2d-x-2.1.1' of git://github.com/dualface/cocos2d-x into for-quick-cocos2d-x-2.1.1
fix CCLuaEngine:executeString(), CCLuaEngine::executeGlobalFunction()
fix: Lua loader (android) can't execute bytecodes
add CCFileUtils::getDocumentsPath()
fix AudioEngine for Samsung I9100
fix cocos2d::extension compile erros for win
added  openKeyboard() closeKeyboard() in CCEditBox,
changed  "return" event
disabled noisy logs in  EAGLView.mm