Revert "Fix align type mixup wth align mask"

This reverts commit 2f4f7d22d3
for now while the matter is investigated further.

Also closes #459

src/dungeon.c

@@ -1869,8 +1869,7 @@ assign_rnd_level(d_level *dest, d_level *src, int range)
         dest->dlevel = 1;
 }
 
-/* return an alignment mask */
-unsigned int
+int
 induced_align(int pct)
 {
     s_level *lev = Is_special(&u.uz);