[issue13322] buffered read() and write() does not raise BlockingIOError

[sbt]

Changes by sbt <shibturn at gmail.com>:


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type:  -> behavior
versions: +Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13322>
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