pull request #660 from NullCGT - sleeping monsters

Indicate to players that monsters are sleeping.

Closes #660

src/pager.c

@@ -359,6 +359,8 @@ look_at_monster(char *buf,
             Strcat(buf, (Upolyd && sticks(g.youmonst.data))
                           ? ", being held" : ", holding you");
     }
+    if (mtmp->msleeping)
+        Strcat(buf, ", asleep");
     if (mtmp->mleashed)
         Strcat(buf, ", leashed to you");