Merged revisions 87952-87954 via svnmerge from

Merged revisions 87952-87954 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r87952 | benjamin.peterson | 2011-01-12 09:24:27 -0600 (Wed, 12 Jan 2011) | 1 line

  move this test to test_descr; it's not abc specific
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  r87953 | benjamin.peterson | 2011-01-12 09:25:02 -0600 (Wed, 12 Jan 2011) | 1 line

  oops, wrong class
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  r87954 | benjamin.peterson | 2011-01-12 09:34:01 -0600 (Wed, 12 Jan 2011) | 1 line

  don't segfault on deleting __abstractmethods__ #10892
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