[issue25410] Clean up and fix OrderedDict

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Proposed patch makes OrderedDict.copy() more consistent between implementations.

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stage: needs patch -> patch review
Added file: http://bugs.python.org/file41418/odict_copy_iter.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25410>
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