Fix compatibility skipIf

--HG--
branch : distribute
extra : rebase_source : a70fd5755fad7a30c478c44e270c1dad13e66a47

setuptools/tests/py26compat.py

@@ -11,3 +11,4 @@ except AttributeError:
 			if condition:
 				return skip
 			return func
+		return skipper