git: 5a7f1dde93a4..682da5a0fdb2 - vendor/bc - vendor branch updated

[Stefan Eßer]

The branch vendor/bc has been updated by se:

URL: https://cgit.FreeBSD.org/src/log/?id=5a7f1dde93a4..682da5a0fdb2

682da5a0fdb2 vendor/bc: upgrade to version 7.1.0