Merged revisions 85140 via svnmerge from

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

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  r85140 | brian.curtin | 2010-10-01 09:49:24 -0500 (Fri, 01 Oct 2010) | 4 lines

  Fix #10003. Add SIGBREAK to the set of valid signals on Windows.

  This fixes a regression noticed by bzr, introduced by issue #9324.
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