To facilitate printer driver protocol testing the windows simulation is able to communicate to a printer simulation through the Loopback address on a hardcoded tcp/ip port.

This change allows the IP address and the port to be specified so that an actual printer on the network can be used as well.

The command argument format for the printer IP address, using the loop back address as an example is: pip127.0.0.1

The command argument format for the printer port number, using 4567 as the example port is: ppor4567

both arguments are case sensitive.