Merged revisions 83944 via svnmerge from

Merged revisions 83944 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r83944 | antoine.pitrou | 2010-08-11 15:31:33 +0200 (mer., 11 août 2010) | 6 lines

  Issue #9550: a BufferedReader could issue an additional read when the
  original read request had been satisfied, which can block indefinitely
  when the underlying raw IO channel is e.g. a socket.  Report and original
  patch by Jason V. Miller.
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