Add missing import when running these tests standalone.

Lib/email/test/test_email_torture.py

@@ -13,7 +13,7 @@ from cStringIO import StringIO
 from types import ListType
 
 from email.test.test_email import TestEmailBase
-from test.test_support import TestSkipped
+from test.test_support import TestSkipped, run_unittest
 
 import email
 from email import __file__ as testfile
@@ -128,7 +128,7 @@ def suite():
 
 def test_main():
     for testclass in _testclasses():
-        test_support.run_unittest(testclass)
+        run_unittest(testclass)