[issue16286] Use hash if available to optimize a==b and a!=b for bytes and str

[STINNER Victor]

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


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title: Optimize a==b and a!=b for bytes and str -> Use hash if available to optimize a==b and a!=b for bytes and str

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16286>
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