Merged revisions 78527,78531 via svnmerge from

Merged revisions 78527,78531 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r78527 | gregory.p.smith | 2010-02-28 17:22:39 -0800 (Sun, 28 Feb 2010) | 4 lines

  Issue #7242: On Solaris 9 and earlier calling os.fork() from within a
  thread could raise an incorrect RuntimeError about not holding the import
  lock.  The import lock is now reinitialized after fork.
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  r78531 | gregory.p.smith | 2010-02-28 18:31:33 -0800 (Sun, 28 Feb 2010) | 2 lines

  Fix for r78527.  It left out updating forkpty.
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