Merged revisions 85253,85452-85454 via svnmerge from

Merged revisions 85253,85452-85454 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r85253 | georg.brandl | 2010-10-06 10:52:48 +0200 (Mi, 06 Okt 2010) | 1 line

  Copyedit of os.symlink() docs.
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  r85452 | georg.brandl | 2010-10-14 08:43:22 +0200 (Do, 14 Okt 2010) | 1 line

  #10046: small correction to atexit docs.
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  r85453 | georg.brandl | 2010-10-14 08:46:08 +0200 (Do, 14 Okt 2010) | 1 line

  #6825: small correction to split() docs.
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  r85454 | georg.brandl | 2010-10-14 08:48:47 +0200 (Do, 14 Okt 2010) | 1 line

  Mention 2to3.
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