NRE in Actor.Destroy
Started implementing first boss - entrance, earthquake.
Hooked up some weapons
- better BOSS1 poly collider
- cleaned up the FaceTarget behavior and fixed a bug in rotation limits
- framework for a boss AI script, including some interesting gameplay
	- changes to Fader to make it useful for teleporting
- put the Tank AI in MobAI.cs, where it belongs
- DropShadow now picks up the alpha of its target
The fucking hoops you have to jump through... got BOSS1 to drop off and delivery mobs, and made alpha fading work reliably.
Improved host -> host possession.

- happens automatically, player no longer has to run into new possessee
- the old ship gets put back on the MOB layer