[libfko] bug fix to maintain OpenSSL compatibility for HMAC keys longer than associated block size
[test suite] added HMAC key tests
[test suite] added files to Makefile.am and added a test to verify this
[test suite] minor bug fix for HMAC SHA384 default key test rc file path
[test suite] 'key_file' hash key update for HMAC SHA384 test
bug fix to remove hmac_sha512_long_key_access.conf file (doesn't exist) from Makefile.am