Commit implements `Enable status` which shows/is in alignment with (22.27) Get
User Access Command and displays User ID Enable/Disable status of given User ID
at given channel.
Commit adds support for cipher suites 6/7/8 (HMAC-MD5) and cipher
suites 15/16/17 (HMAC_SHA256).
This also fixes:
* ID:442 - IPMI_AUTH_RAKP_HMAC_MD5 support in lanplus
* ID:141 - RMCP+ Cipher-suite 17 not supported
Original author Liebig Holger(Fujitsu).
Code cleanup done by Florian Breu and Zdenek Styblik.
Reworked event type code/sensor type parsing in order to support
VITA-specific extensions. Added VITA-specific sensor-specific event
types and VITA-specific sensor types.
