issue #3090: remove macro CC_DIRECTOR_STATS_POSITION in CCDirector.cpp
issue #3090:change _winSizeInPoints to _openGLView->getDesignResolutionSize()
issue #3090:remove _winSizeInPoints in CCDirector
issue #3090:remove Director::getInstance() in openGLViewProtocol
issue #3090:add Node::getDirector() function
issue #3090:remove Director::getInstance() in CCNode.cpp
issue #3090:fix Node::getDirector() bug
issue #3090:remove Director::getInstance() in CCAction.cpp