Somehow, copy() of a classic class object was handled

atomically, but deepcopy() didn't support this at all.
I don't see any reason for this, so I'm adding ClassType
to the set of types that are deep-copied atomically.

Lib/copy.py

@@ -220,6 +220,7 @@ except AttributeError:
     pass
 d[types.TypeType] = _deepcopy_atomic
 d[types.XRangeType] = _deepcopy_atomic
+d[types.ClassType] = _deepcopy_atomic
 
 def _deepcopy_list(x, memo):
     y = []

Lib/test/test_copy.py

@@ -239,7 +239,7 @@ class TestCopy(unittest.TestCase):
             pass
         tests = [None, 42, 2L**100, 3.14, True, False, 1j,
                  "hello", u"hello\u1234", f.func_code,
-                 NewStyle, xrange(10)]
+                 NewStyle, xrange(10), Classic]
         for x in tests:
             self.assert_(copy.deepcopy(x) is x, `x`)