Turbo Beholder - 2011-06-18

Communication model isn't implemented yet, though probably should be one day.
Visible mounts: already present, but for some reason don't work.
Mount damage is already present, albeit "in embryo" hardcoded form until a better upgrade-tracking system.
Subunits are targettable by now. Interceptor-launching "weapons": implemented, though can be improved.
The rest is doable via data, e.g. placing interceptor mounts onto destroyable subunits.