Merged revisions 88352 via svnmerge from

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

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  r88352 | gregory.p.smith | 2011-02-05 13:47:25 -0800 (Sat, 05 Feb 2011) | 3 lines

  issue7678 - Properly document how to replace a shell pipeline so that SIGPIPE
  happens when the end exits before the beginning.
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