[issue2335] Backport set literals

[Alexandre Vassalotti]

Alexandre Vassalotti <alexandre at peadrop.com> added the comment:

It been a long week, but this patch is now committed as r77400.

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resolution:  -> accepted
stage: patch review -> committed/rejected
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue2335>
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