fix Python2 infinite recursion on __name__

IPython/parallel/controller/dependency.py

@@ -75,7 +75,7 b' class dependent(object):'
     if not py3compat.PY3:
         @property
         def __name__(self):
-            return self.__name__
+            return self.func_name
 
 @interactive
 def _require(*modules, **mapping):