issue #2300: Removing all 'copyWithZone' pattern.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into remove-copywithzone

Conflicts:
	scripting/lua/cocos2dx_support/LuaCocos2d.cpp
issue #2300: Warning fixes.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into remove-copywithzone

Conflicts:
	cocos2dx/actions/CCActionInterval.cpp
	cocos2dx/cocoa/CCDictionary.cpp
	samples/Cpp/TestCpp/Classes/NodeTest/NodeTest.cpp
Merge pull request #3101 from dumganhar/remove-copywithzone

issue2300: Removing all 'copyWithZone' pattern.