Merged revisions 79100 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

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  r79100 | florent.xicluna | 2010-03-19 19:34:55 +0100 (ven, 19 mar 2010) | 2 lines

  Various tests cleanup: check_warnings/check_py3k_warnings, unittest.assert* and setUp/tearDown.
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