Merged revisions 76640 via svnmerge from

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

........
  r76640 | philip.jenvey | 2009-12-02 18:25:54 -0800 (Wed, 02 Dec 2009) | 2 lines

  #7177: clarify the potential PIPE deadlock warnings
........