As agreed previously, CC_PROPERTY_XXX and CC_SYNTHESIZE_XXX should
not be used in the code.
This patch removes some of them. There are still many more to remove
1. update all copyright from 2010-2011 to 2010-2012 cocos2d-x.org
2. update COCOS2D_VERSION to 0x00020003
3. update const char* cocos2dVersion() to "cocos2d-2.0-x-2.0.3"