Add test suites for SHA-224 and SHA-384.

Relevant lines from testsuite.sha224 were verified against the test vectors in
RFC 3874, while testsuite.384 was verified against
https://www.cosic.esat.kule

Add test suites for SHA-224 and SHA-384.

Relevant lines from testsuite.sha224 were verified against the test vectors in
RFC 3874, while testsuite.384 was verified against
https://www.cosic.esat.kuleuven.be/nessie/testvectors/hash/sha/Sha-2-384.unverified.test-vectors

ok millert@

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Remove sum test since sum(1) is gone; add sha512 test

remove rmd160 and add cksum, sha256, and sum while here
phessler@ deraadt@

Rename a bunch of the old bsd.regress.mk variables into the new ones.

ok art@

A complete rewrite.

- have obvious names on the tests, not 't1', 't2', etc.
- Don't create lots of files just once and then reuse them for all
tests. Always run the commands and let cmp take in

A complete rewrite.

- have obvious names on the tests, not 't1', 't2', etc.
- Don't create lots of files just once and then reuse them for all
tests. Always run the commands and let cmp take input from /dev/stdin
- Don't just print when some test fails and return success. Return failure
and shut up, someone will read the log.

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trivial conversions to bsd.regress.mk

trivial regression tests for md5/sha1/rmd160 driver