git: c2c85f88902d..5a7f1dde93a4 - vendor/bc - vendor branch updated

[Stefan Eßer]

The branch vendor/bc has been updated by se:

URL: https://cgit.FreeBSD.org/src/log/?id=c2c85f88902d..5a7f1dde93a4

5a7f1dde93a4 vendor/bc: upgrade to version 7.0.3