[issue31664] Add support of new crypt methods

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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components: +Library (Lib)
nosy: +christian.heimes, dstufft, gregory.p.smith, jafo
type:  -> enhancement
versions: +Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31664>
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