Update stale comment on protecting UMA per-CPU caches: we now use critical sections rather than mutexes.
Update stale comment on protecting UMA per-CPU caches: we now use
critical sections rather than mutexes.

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