Merged revisions 85589-85591 via svnmerge from

Merged revisions 85589-85591 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r85589 | benjamin.peterson | 2010-10-16 20:25:19 -0500 (Sat, 16 Oct 2010) | 1 line

  remove rather pointless test
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  r85590 | benjamin.peterson | 2010-10-16 20:29:11 -0500 (Sat, 16 Oct 2010) | 1 line

  disable the garbage collector while collecting traces, so that __del__s don't get caught
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  r85591 | benjamin.peterson | 2010-10-16 20:30:26 -0500 (Sat, 16 Oct 2010) | 1 line

  use assertion methods
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