Merged revisions 85987 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r85987 | brian.curtin | 2010-10-30 16:24:21 -0500 (Sat, 30 Oct 2010) | 2 lines

  Fix #10257. Clear resource warnings by using os.popen's context manager.
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