Don't deprecate callback functions in Layer. Reason:
Callback function should not be deprecated, it will generate lots of warnings.
Since 'setTouchEnabled' was deprecated, it will make warnings if developer overrides onTouchXXX and invokes setTouchEnabled(true) instead of using EventDispatcher::addEventListenerWithXXX.
Fix of unsigned / signed mismatch in UIPageView.cpp.
Removing unused 'virtual' keyword in testcpp since we're using EventDispatcher::addEventListenerXXX to register event listener.
Prevents warning of invoking ScrollView::setTouchEnabled. Layer::setTouchEnabled should not be a virtual function.
Update tools/tolua/cocos2dx.ini, ignore onTouchXXX, onKeyXXX, onAccXXX callback functions to be bound to LUA.
Merge pull request #4345 from dumganhar/develop

Don't deprecate callback functions in Layer.