Merge latest ADARA packet code

Pull in the lastest packet parsing code from the ADARA git repo.  Lots
of minor fixes.  Main one was the addition of a new status type to the
variable value packets.  (The lack of whic was causing the live listener
to crash on the SNS CORELLI beamline.)

Refs #9424
Merge branch 'feature/9424_merge_upstream_adara' into develop