Update the description of the -u option to mention that IP_PORTRANGE_HIGH and _DEFAULT are the same for 5.x.
Update the description of the -u option to mention that IP_PORTRANGE_HIGH
and _DEFAULT are the same for 5.x.

Committed under threat of action from:	The mdoc police

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