Synchronize with C.msg revision 199083 and improve some existing messages.
Synchronize with C.msg revision 199083 and improve some existing messages.

Reviewed by:	remko
Approved by:	remko

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