Merged revisions 72539 via svnmerge from

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

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  r72539 | tarek.ziade | 2009-05-10 13:59:30 +0200 (Sun, 10 May 2009) | 1 line

  refactored test_sysconfig so it uses test.test_support.EnvironmentVarGuard
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