[issue37152] Add AF_LOCAL alias for AF_UNIX

[carlo]

Change by carlo <carlo.revelli at berkeley.edu>:


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keywords: +patch
pull_requests: +13695
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/13810

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37152>
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