Merged revisions 72306 via svnmerge from

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  r72306 | steven.bethard | 2009-05-04 18:31:22 -0700 (Mon, 04 May 2009) | 1 line

  Update bdist_msi so that the generated MSIs for pure Python modules can install to any version of Python, like the generated EXEs from bdist_wininst. (Previously, you had to create a new MSI for each version of Python.)
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