[issue12939] Add new io.FileIO using the native Windows API

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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components: +Windows
nosy: +ezio.melotti
stage:  -> needs patch
type:  -> enhancement
versions: +Python 3.4 -Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12939>
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