[issue21111] Add a new PyLong_AsUnsignedLongAndOverflow function

[STINNER Victor]

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


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title: PyLong_AsUnsignedLongAndOverflow does not exist -> Add a new PyLong_AsUnsignedLongAndOverflow function

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21111>
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