Allow overriding the bc implementation used in run-bc
While base bc is great, it uses libcrypto's BIGNUM implementation.
This implies that the independent verification of the bn_test isn't
as independent as it should be.
With this commit, run-bc picks up bn-gh if it is installed. This appears
to work on amd64, arm64 and sparc64 (where gbc is busted). I will send
PRs to the regress maintainers once I will have tested this a bit more
thoroughly. Committing this early since I juggle way too many diffs
already.
projects / openbsd / commit