[issue46657] Add mimalloc memory allocator

[Christian Heimes]

Christian Heimes <lists at cheimes.de> added the comment:

Buildbots "PPC64 Fedora PR" and all RHEL 7 build bots provided by David Edelsohn are failing because compiler is missing support for stdatomic.h.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46657>
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