Rework many comments.
Rework many comments.

requeststatus:
  add REQUEST_DEGRADED status

struct rqinfo:
  add members devmajor and devminor to compensate for lost dev_t.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase