[airborne] Linux server now available.

[Ryan C. Gordon]

> Airborne looks for "-ip=xxx.xxx.xxx.xxx" instead of 
> "-multihome=xxx.xxx.xxx.xxx" on the command line (and can also use 
> IP=xxx.xxx.xxx.xxx in MOHADedicatedServer.ini, too)...likewise for 
> -port=xxxx and Port=xxxx on the command line and in the ini file, 
> respectively.

(Command line takes precedence over .ini file in both cases, btw.)

--ryan.