Merged revisions 83993 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r83993 | eric.araujo | 2010-08-14 04:30:34 +0200 (sam., 14 août 2010) | 2 lines

  Use a marker in generated MANIFEST files, don't touch files without it. Fixes #8688.
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