Fixes towards better MergedArray and partial functions.

jedi/evaluate/compiled/fake/_functools.pym

@@ -5,5 +5,4 @@ class partial():
         self.__keywords = keywords
 
     def __call__(self, *args, **kwargs):
-        # I know this doesn't work in Python, but in Jedi it does ;-)
-        return self.__func(*self.__args, *args, **self.__keywords, **kwargs)
+        return self.__func(*(self.__args + args), **dict(self.__keywords, **kwargs))