Merged revisions 77943,77959-77960 via svnmerge from

Merged revisions 77943,77959-77960 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r77943 | r.david.murray | 2010-02-03 08:36:23 -0500 (Wed, 03 Feb 2010) | 2 lines

  Explicitly mention the default value for formatdate's usegmt parameter.
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  r77959 | nick.coghlan | 2010-02-04 07:43:58 -0500 (Thu, 04 Feb 2010) | 1 line

  Issue 6760: Clarify args handling for subprocess.Popen. Patch by Chris Rebert
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  r77960 | r.david.murray | 2010-02-04 11:33:31 -0500 (Thu, 04 Feb 2010) | 2 lines

  Add Chris Rebert to ACKS for issue 6760 Popen doc improvements.
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