[issue16850] Add "e" mode to open(): close-and-exec (O_CLOEXEC) / O_NOINHERIT

[STINNER Victor]

Changes by STINNER Victor <victor.stinner at gmail.com>:


Removed file: http://bugs.python.org/file28561/open_mode_e.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16850>
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