Merged revisions 80857 via svnmerge from

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

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  r80857 | brian.curtin | 2010-05-05 21:54:44 -0500 (Wed, 05 May 2010) | 5 lines

  Fix #7863. Properly identify Windows 7 and Server 2008 R2.

  Removed various unused code and added a way to correctly determine
  server vs. workstation via the registry.
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