Merge p3yk branch with the trunk up to revision 45595. This breaks a fair

number of tests, all because of the codecs/_multibytecodecs issue described
here (it's not a Py3K issue, just something Py3K discovers):
http://mail.python.org/pipermail/python-dev/2006-April/064051.html

Hye-Shik Chang promised to look for a fix, so no need to fix it here. The
tests that are expected to break are:

test_codecencodings_cn
test_codecencodings_hk
test_codecencodings_jp
test_codecencodings_kr
test_codecencodings_tw
test_codecs
test_multibytecodec

This merge fixes an actual test failure (test_weakref) in this branch,
though, so I believe merging is the right thing to do anyway.

Lib/test/test_copy_reg.py

@@ -8,6 +8,22 @@ class C:
     pass
 
 
+class WithoutSlots(object):
+    pass
+
+class WithWeakref(object):
+    __slots__ = ('__weakref__',)
+
+class WithPrivate(object):
+    __slots__ = ('__spam',)
+
+class WithSingleString(object):
+    __slots__ = 'spam'
+
+class WithInherited(WithSingleString):
+    __slots__ = ('eggs',)
+
+
 class CopyRegTestCase(unittest.TestCase):
 
     def test_class(self):
@@ -84,6 +100,19 @@ class CopyRegTestCase(unittest.TestCase):
             self.assertRaises(ValueError, copy_reg.add_extension,
                               mod, func, code)
 
+    def test_slotnames(self):
+        self.assertEquals(copy_reg._slotnames(WithoutSlots), [])
+        self.assertEquals(copy_reg._slotnames(WithWeakref), [])
+        expected = ['_WithPrivate__spam']
+        self.assertEquals(copy_reg._slotnames(WithPrivate), expected)
+        self.assertEquals(copy_reg._slotnames(WithSingleString), ['spam'])
+        expected = ['eggs', 'spam']
+        expected.sort()
+        result = copy_reg._slotnames(WithInherited)
+        result.sort()
+        self.assertEquals(result, expected)
+
+
 def test_main():
     test_support.run_unittest(CopyRegTestCase)