Merged revisions 68425,68461,68498 via svnmerge from

Merged revisions 68425,68461,68498 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r68425 | benjamin.peterson | 2009-01-08 20:56:32 -0600 (Thu, 08 Jan 2009) | 1 line

  fix markup
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  r68461 | kristjan.jonsson | 2009-01-09 15:35:16 -0600 (Fri, 09 Jan 2009) | 2 lines

  Issue 4293:  Make Py_AddPendingCall() thread safe
  Add test cases and documentation
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  r68498 | benjamin.peterson | 2009-01-10 13:08:49 -0600 (Sat, 10 Jan 2009) | 1 line

  fix encoding
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