Copy reduce() to _functools so to have functools.reduce() not raise a warning
from usage under -3.
diff --git a/Lib/functools.py b/Lib/functools.py
index 30e1d24..a54f030 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -7,8 +7,7 @@
# Copyright (C) 2006 Python Software Foundation.
# See C source code for _functools credits/copyright
-from _functools import partial
-from __builtin__ import reduce
+from _functools import partial, reduce
# update_wrapper() and wraps() are tools to help write
# wrapper functions that can handle naive introspection