extend "smart status" command to "smart status [vendor]", and supply a
"Micron" (for Micron/Crucial) list with their documented values.

this allows the vendor-specific data to be used.

there appears to be no simple way to automatically determine the right
vendor to use -- identify data seems to be the only obvious way and
that data can be and is changed by OEMs.  (eg, a disk may be listed as
being "dell", but dell don't make disks.)  as such, no attempt is made
to automatically determine if a vendor list should be used.

(mrg)