Added __get__, __set__, and __delete__ to SPECIAL_METHODS. Also added NEW_STYLE_CLASS_METHODS which is used in warn.py to warn if these methods are used in a non-new-style class.
Added __get__, __set__, and __delete__ to SPECIAL_METHODS.
Also added NEW_STYLE_CLASS_METHODS which is used in warn.py to warn if these methods are used in a non-new-style class.

mitar/pychecker,mitar/pychecker