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/chase.c

@@ -65,7 +65,7 @@ can_blink(struct thing *tp)
 
 	    /* Is it OK to move there? */
 	    if (step_ok(y, x, NOMONST, tp) &&
-		(!isatrap(mvwinch(cw, y, x)) ||
+		(!isatrap(CCHAR( mvwinch(cw, y, x) )) ||
 		  rnd(10) >= tp->t_stats.s_intel ||
 		  on(*tp, ISFLY))) {
 		/* OK, we can go here.  But don't go there if