Merged revisions 75111 via svnmerge from

Merged revisions 75111 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r75111 | r.david.murray | 2009-09-28 12:57:45 -0400 (Mon, 28 Sep 2009) | 5 lines

  Prevent test_bad_address failure when a domain in the dns search
  path implements a '*' default rule.  Also update comment with
  a more complete explanation of the difficulties inherent in
  the test.
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