modify and extend gui
Merge branch 'master' of https://github.com/nutty898/CocosGUI into CocosGUI_pipu

Conflicts:
	CocoGUILIB/CocoGUILIB/Component/CocoPanel.cpp
	CocoGUILIB/CocoGUILIB/System/CocosGUI.h
Merge pull request #4 from pipu/CocosGUI_pipu

Cocos gui pipu