stone-to-flesh vs golem statues and figurines

     Back port the trunk fix that prevents stone-to-flesh on self when
wielding a figurine from leaving stale worn object pointer and eventually
triggering a panic or crash.  Branch only except for fixes34.4 update.

doc/fixes34.4

@@ -340,6 +340,7 @@ towel equipped in weapon, alternate weapon, or quiver slot can be applied
 lit candle or potion of oil which burned out while equipped would leave stale
 	weapon/alternate-weapon/quiver pointer that could cause panic or crash
 wielded/worn figurine which auto-transformed had same stale pointer bug
+likewise with casting stone-to-flesh on self for figurine of non-veggy monst
 format names of not yet id'd artifacts such that obj type shows for non-weapons
 make quest leader and nemesis be unlikely to be affected by traps
 use a more precise jumping path for far, non-straight line destinations