docompare():  Another reasonable optimization from Jonathan Hogg for the
explicit comparison function case:  use PyObject_Call instead of
PyEval_CallObject.  Same thing in context, but gives a 2.4% overall
speedup when sorting a list of ints via list.sort(__builtin__.cmp).
diff --git a/Misc/ACKS b/Misc/ACKS
index 4ecc56f..5a4501e 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -213,6 +213,7 @@
 Gregor Hoffleit
 Chris Hoffman
 Albert Hofkamp
+Jonathan Hogg
 Gerrit Holl
 Philip Homburg
 Naofumi Honda
diff --git a/Objects/listobject.c b/Objects/listobject.c
index dd2d580..4825e9b 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -780,7 +780,7 @@
 	Py_INCREF(y);
 	PyTuple_SET_ITEM(args, 0, x);
 	PyTuple_SET_ITEM(args, 1, y);
-	res = PyEval_CallObject(compare, args);
+	res = PyObject_Call(compare, args, NULL);
 	Py_DECREF(args);
 	if (res == NULL)
 		return CMPERROR;