Merged revisions 75248 via svnmerge from

Merged revisions 75248 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r75248 | benjamin.peterson | 2009-10-04 15:40:17 -0500 (Sun, 04 Oct 2009) | 11 lines

  Merged revisions 75066 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r75066 | andrew.kuchling | 2009-09-25 17:23:54 -0500 (Fri, 25 Sep 2009) | 4 lines

    #6243: fix segfault when keyname() returns a NULL pointer.

    Bug noted by Trundle, patched by Trundle and Jerry Chen.
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