fix github issue #111 - stone-to-flesh of statues

Fixes #111

Casting stone-to-flesh at a random statue animates it as a monster
(created via direct call to makemon()) at an adjacent or nearby spot
if there is already a monster at the statue's spot, but doing so on
a statue of a petrified monster (create attempt via montraits() which
called makemon() without the ADJACENTOK flag) turned it into a corpse
instead.  Pass an extra argument to montraits() so that it behaves
the same normal statue animation for stone-to-flesh without changing
how it behaves when reviving corpses for undead-turning.

src/trap.c

@@ -595,7 +595,7 @@ int *fail_reason;
     if (use_saved_traits) {
         /* restore a petrified monster */
         cc.x = x, cc.y = y;
-        mon = montraits(statue, &cc);
+        mon = montraits(statue, &cc, (cause == ANIMATE_SPELL));
         if (mon && mon->mtame && !mon->isminion)
             wary_dog(mon, TRUE);
     } else {