Merged revisions 79860 via svnmerge from

Merged revisions 79860 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r79860 | mark.dickinson | 2010-04-06 20:55:03 +0100 (Tue, 06 Apr 2010) | 10 lines

  Merged revisions 79858 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r79858 | mark.dickinson | 2010-04-06 20:50:03 +0100 (Tue, 06 Apr 2010) | 3 lines

    Issue #7947:  Clarify math module behaviour for IEEE 754 special cases, along
    with a number of additional minor edits and typo corrections.
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