Add -p argument to set the port number

[aabluedragon]

Support for cmd line args such as -host 23513 (port number) and -join 88.88.88.88:23513 (host:port).

[fragglet]

-p would make more sense than -host - all existing arguments are single character, and it would match eg. the arguments to netcat.

There's no need to add a new -join argument; -j can be extended. Actually the manpage says it's already supported?

[aabluedragon]

Right, I see it now - https://fragglet.github.io/sdl-sopwith/doc/sopwith.6.html My bad, somehow I missed this page. Thanks, you can close the issue I guess.

[fragglet]

No, it's still worth keeping the issue so that we can add the ability to change the port servers run on (-p)

[aabluedragon]

a -p portnum argument would be useful.