Reconstruct the operation of handling lua script event
Delete some ScriptEventType only used to Lua 、adjust the event callback mechanism  and rename cc.HANDLERTYP_ related to avoid overlong
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into DispatcherBak1

Conflicts:
	cocos/scripting/lua/bindings/lua_cocos2dx_extension_manual.cpp
Rename EVENT_KEYBOARD_RELEASED and resolve a possible memory leak bug
Merge pull request #4691 from samuele3hu/DispatcherBak1

Reconstruct the operation of handling lua script event