ai interface and lobby bugs [small]

[cain]

for us ai developer, is a nice otpion to start a game with two ais and the lone player as spectator. It was possible in the old lobby tanks to a quirk, but now that bug has been solved (grin)

also, i've noticed that when plaiyng on the same ai team (not ally, the same team, sharing units and all) the ai wont get game data as if the player units werent in los, so unitdef is null, getunitpos returns 0,0,0 and so on. no idea of what is happening. that is a useful feature to help stuck ai to grow when debugging.