[issue16289] Update devguide for 3.4

[Roundup Robot]

Roundup Robot added the comment:

New changeset 2f682e133960 by Ned Deily in branch 'default':
Issue #16289: Update Developer's Guide for the 3.4 development cycle.
http://hg.python.org/devguide/rev/2f682e133960

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16289>
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