Blocked revisions 71839 via svnmerge

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  r71839 | mark.dickinson | 2009-04-24 17:39:07 +0100 (Fri, 24 Apr 2009) | 15 lines

  Merged revisions 71837-71838 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r71837 | mark.dickinson | 2009-04-24 17:34:14 +0100 (Fri, 24 Apr 2009) | 4 lines

    Issue #5593: Use more robust test for double-rounding in test_fsum.
    While we're at it, use new unittest.skipUnless decorator to
    implement skipping for that test.
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    r71838 | mark.dickinson | 2009-04-24 17:37:22 +0100 (Fri, 24 Apr 2009) | 2 lines

    Remove unnecessary double negative
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