[issue9299] os.mkdir() and os.makedirs() add a keyword argument to suppress "File exists" exception.

[Ray.Allen]

Changes by Ray.Allen <ysj.ray at gmail.com>:


Removed file: http://bugs.python.org/file18059/mkdir_py3k.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9299>
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