guardian corpse, statue animation follow-up

- fix ring of protection from shape changers causing
  real monster to be created.
- add ability to get the character class monster from
  genus() or the species.
- use the character class monster when animating
  guardian corpses.

src/sounds.c

@@ -438,7 +438,7 @@ register struct monst *mtmp;
     /* Make sure its your role's quest quardian; adjust if not */
     if (ptr->msound == MS_GUARDIAN && ptr != &mons[urole.guardnum]) {
     	int mndx = monsndx(ptr);
-    	ptr = &mons[genus(mndx)];
+    	ptr = &mons[genus(mndx,1)];
     }
 
     /* be sure to do this before talking; the monster might teleport away, in