Animate & Defile Fixes

Both of these spells involve obnoxious server-spamming mechanics. I
removed the LOOK_NO flag from dead bodies so that animate and defile can
now both be cast on monster corpses. This should help curb the practice
of a player running a death mule 500 times to work these spells.

Defile had obnoxious anti-improvement code, which I removed. It can give
10-40 mana, but I lowered the upper limit to just above max mana, down
from 3x max mana. Since it can now be cast on monster corpses, Qors can
regain mana by casting Defile regularly.

Animate had a range of problems. The monsters created were dropping
loot, which I fixed. They are now technically illusions, which makes
sense, since not all corpses have skeletons inside them. Players may now
animate monster corpses, which should be fun, but they can also animate
killed animated skeletons, so they can work animate in peace by
repeatedly animating a single corpse.

WHEW!