[dispatcher] Adding (s|g)etCurrentTarget for Event.
[dispatcher] Adding clone method for listener class.
[dispatcher] Checking whether the listener was registered.
Unneeded cast fix.
file mode changed, cocos2d.h from 100755 -> 100644
Adding NewEventDispatcher Test.
[dispatcher] Using cocos2d-x memory model instead of std::shared_ptr. It should be unified.
[dispatcher] Updating EventDispatcherTest.cpp.
[dispatcher] Updating HelloWorldScene.cpp, if you wish to using the same listener for different target, please invoke clone to create a new one.
[dispatcher] Adding new EventDispatcher Test to Makefile and project.