Remove bogus TESTSDIR

Descend into new opencrypto test suite

Add some trivial tests for the in-kernel opencrypto framework, and link
them into the build. (Thanks to Matthias Drochner for the test programs!)

XXX The arc4 and null tests currently fail - under

Add some trivial tests for the in-kernel opencrypto framework, and link
them into the build. (Thanks to Matthias Drochner for the test programs!)

XXX The arc4 and null tests currently fail - under investigation.

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Get rid of static Atffiles and let bsd.test.mk generate them on the fly.

Convert libcrypto tests to ATF. Original work done by Lukasz Strzygowski
in the GSoC 2008 atfify project. Reorganization of files and build system
reworked by me.