Merged revisions 68132 via svnmerge from

Merged revisions 68132 via svnmerge from
svn+ssh://svn.python.org/python/branches/py3k

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  r68132 | antoine.pitrou | 2009-01-01 16:35:33 +0100 (Thu, 01 Jan 2009) | 9 lines

  Merged revisions 68128 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r68128 | antoine.pitrou | 2009-01-01 15:11:22 +0100 (jeu., 01 janv. 2009) | 3 lines

    Issue #3680: Reference cycles created through a dict, set or deque iterator did not get collected.
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