Merged revisions 80105 via svnmerge from

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

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  r80105 | victor.stinner | 2010-04-16 13:45:13 +0200 (ven., 16 avril 2010) | 3 lines

  Issue #8412: os.system() now accepts bytes, bytearray and str with
  surrogates.
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