Commemorate the release of RFC 6303 by updating the comments regarding our default empty zones.  No functional changes.
Commemorate the release of RFC 6303 by updating the comments regarding
our default empty zones.  No functional changes.

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