Fix many compiler warnings.

There should only be two changes in behavior:

arogue7/fight.c, arogue7/fight.c: a to-hit bonus is now correctly
applied to characters who are not monks instead of monks who are not
empty-handed.

urogue/fight.c: fixed an interaction with the "debug" macro that could
cause the wrong message to be displayed.

arogue5/monsters.c

@@ -730,14 +730,12 @@ wake_monster(int y, int x)
     register struct room *trp;
     register const char *mname;
     bool nasty;	/* Will the monster "attack"? */
-    char ch;
 
     if ((it = find_mons(y, x)) == NULL) {
 	msg("Can't find monster in show");
 	return (NULL);
     }
     tp = THINGPTR(it);
-    ch = tp->t_type;
 
     trp = roomin(&tp->t_pos); /* Current room for monster */
     mname = monsters[tp->t_index].m_name;