Merged revisions 78505-78506 via svnmerge from

Merged revisions 78505-78506 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r78505 | benjamin.peterson | 2010-02-27 11:40:01 -0600 (Sat, 27 Feb 2010) | 1 line

  only accept AttributeError as indicating no __prepare__ attribute on a metaclass, allowing lookup errors to propogate
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  r78506 | benjamin.peterson | 2010-02-27 11:41:13 -0600 (Sat, 27 Feb 2010) | 1 line

  check PyDict_New() for error
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