Mention that the 'zonelimit' issue has been fixed on -HEAD and RELENG_6.
Mention that the 'zonelimit' issue has been fixed on -HEAD and RELENG_6.

Confirmed by:	mohans

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