Added support for MegaRAID and HP cciss RAID

This is functioning on our MegaRAID and HP RAID systems.
The HP RAID stuff is a bit hacky, as I couldnt figure our the best way to get a list of the the HP Raid device ids and their corresponding /dev/ names.

The -i Ignore attribute was added as it seems the Intel 520 SSDs incorrectly report S.M.A.R.T attribute 9.