Fix two NameErrors in distutils (#10407)

dir_util.py

@@ -5,6 +5,7 @@ Utility functions for manipulating directories and directory trees."""
 __revision__ = "$Id$"
 
 import os, sys
+import errno
 from distutils.errors import DistutilsFileError, DistutilsInternalError
 from distutils import log
 

tests/test_sysconfig.py

 """Tests for distutils.sysconfig."""
 import os
+import shutil
 import test
 import unittest