more #H4347 - corpse revival

When a stack of N corpses is hit by wand or spell of undead turning,
1 revives and N-1 remain corpses.  If owned by a shop, a fee for
using up all N corpses was charged and if carried at the time, the
extra N-1 became owned by the player but if on the floor, they
remained owned by the shop.  Feedback was schitzophrenic as to
whether the whole stack was involved:
 One of the <foo> corpses glows irridescently.
 You owe <shk> X zormids for them.

Split the stack so that revival explicitly operates on only 1 corpse.
It's done after the revival side of things has already succeeded or
given up, so the split will never need to be undone.

doc/fixes36.1

@@ -267,6 +267,8 @@ while in shop, undead turning at self causing carried, hero owned corpse to
 	resurrect claimed it belonged to shopkeeper
 while in shop, stone-to-flesh at self causing carried, hero owned figurine
 	or statue to animate claimed it belonged to shopkeeper
+reviving one of a stack of N corpses in a shop charged a usage fee for all N;
+	remaining N-1 were owned by hero if carried but by shop if on floor
 
 
 Fixes to Post-3.6.0 Problems that Were Exposed Via git Respository