[issue24316] Fix types.coroutine to accept objects from Cython

[Yury Selivanov]

Yury Selivanov added the comment:

> I just noticed that I hadn't used the real "types.coroutine" in my Py3.5 tests when reporting back in issue 24017.

Please test thoroughly the attached patch.

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Added file: http://bugs.python.org/file39548/types_coroutine.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24316>
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