Log message:
py-bcrypt3: Re-import bcrypt-3.2.2.

This is the last version before being reimplemented in Rust.

Inspired by:
From Jonathan Perkin <jperkin@smartos.org>
via drecklypkg commit 279708db850c3b4c32a30741cd95c48b4e3fd347

but additionally:
- mention Rust in the DESCR
- convert to wheel.mk