Bots try to reach button in as_oilrig from other side of the wall

[stefanhendriks]

See:

The bot tries to reach the button at the right.

Strange thing: the bot seems to realise it cannot reach the button. Then it tries to find a 'close node' (using getCloseNode). But the close not seems to be the very node where the bot is. This is strange because the node we have to look for should be able to do a traceline to the button. Funky!

[stefanhendriks]

I have the impression this has the same cause as func_illusionary, as this is a trigger_multiple and it is being manipulated via dll.cpp (`post_Spawn). Much like described in #29