[crossfire] Death attack question

[Nicolas Weeger (Laposte)]

Hello.

I fixed a bug preventing death attack from working correctly, but there are a 
few things to decide concerning that:

* what should happen in the case of friendly fire? Right now, damage dealt 
through death attack will be reduced, so player won't be killed. Should 
player be killed anyway?
* if death_attack is combined with AT_MAGIC, a monster can survive if the save 
throw is successful. Is that a good behaviour?
* death attack can success only if hitter level is twice the victim level. 
That sounds pretty arbitrary, no?

Nicolas