Merged revisions 77517,77525 via svnmerge from

Merged revisions 77517,77525 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r77517 | r.david.murray | 2010-01-16 00:15:17 -0500 (Sat, 16 Jan 2010) | 6 lines

  Issue #1670765: Prevent email.generator.Generator from re-wrapping
  headers in multipart/signed MIME parts, which fixes one of the sources of
  invalid modifications to such parts by Generator.  Patch and tests by
  Martin von Gagern.
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  r77525 | r.david.murray | 2010-01-16 11:08:32 -0500 (Sat, 16 Jan 2010) | 2 lines

  Fix issue number in comment.
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