def feature_is_included(self,name):
        return getattr(self,self._feature_attrname(name))
Make sure display_prefix is correctly updated on modification of
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/setuptools-0.6c11/setuptools/dist.py/Distribution.feature_is_included--crossover with--dataset/ETHPy150Open SpriteLink/NIPAP/tests/nipaptest.py/TestPrefixDisplayPrefix.test_prefix_edit