Blocked revisions 72516-72517 via svnmerge

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  r72516 | benjamin.peterson | 2009-05-09 14:03:05 -0500 (Sat, 09 May 2009) | 1 line

  ignore AttributeErrors for classic classes
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  r72517 | benjamin.peterson | 2009-05-09 14:17:59 -0500 (Sat, 09 May 2009) | 1 line

  don't ignore exceptions from _PyObject_LengthHint
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