Aargh! The 2.3 version of this file requires "from test.test_support

import run_suite", but the 2.2.2 version requires "from test_support
import run_suite" ... :-(

Lib/test/test_email.py

@@ -4,7 +4,7 @@
 import unittest
 # The specific tests now live in Lib/email/test
 from email.test.test_email import suite
-from test.test_support import run_suite
+from test_support import run_suite
 
 def test_main():
     run_suite(suite())