Merged revisions 66439 via svnmerge from

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

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  r66439 | martin.v.loewis | 2008-09-13 10:11:57 +0200 (Sa, 13 Sep 2008) | 1 line

  Issue #3833: Use a different upgrade code for Win64 installers.
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