Use port 21 as default if getservbyname fails to find it for us.  This let us remove some crud from the install-procedure.
Use port 21 as default if getservbyname fails to find it for us.  This let
us remove some crud from the install-procedure.

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