MAC unit tests become independent of hashes

The MAC unit tests assume that the MAC algorithm is
based on hash functions (HMAC).
Additionally, a single test vector is quite complex
in that it includes result for multiple tests (each
performed on the same data, but with different
hashes).

This patch simplifies the MAC unit test so that it does
not depend on hashes and a test vector is simply made up by:
* 1 input
* 1 result
* All parameters to pass to the new() function
Add support for CMAC

This patch adds support for CMAC (RFC4493, NIST SP800-38B).