Blocked revisions 79493,79515,79637,79760 via svnmerge

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  r79493 | michael.foord | 2010-03-29 15:04:23 -0500 (Mon, 29 Mar 2010) | 1 line

  Backport of weakref.WeakSet and tests from Python 3.
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  r79515 | thomas.heller | 2010-03-30 15:57:06 -0500 (Tue, 30 Mar 2010) | 1 line

  Revert rev. 79509; ctypes doesn't build on linux.
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  r79637 | raymond.hettinger | 2010-04-02 19:39:26 -0500 (Fri, 02 Apr 2010) | 1 line

  Clear cyclical references in list based OrderedDict.
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  r79760 | raymond.hettinger | 2010-04-04 17:24:03 -0500 (Sun, 04 Apr 2010) | 1 line

  Add tests for functools.total_ordering.
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