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.

--- a/srogue/rings.c	Sat Mar 20 22:36:52 2021 -0400
+++ b/srogue/rings.c	Wed Apr 14 18:55:33 2021 -0400
@@ -288,7 +288,7 @@
 ring_eat(void)
 {
 	reg struct object *lb;
-	reg int hand, i, howmuch;
+	reg int i, howmuch;
 	bool addit;
 
 	howmuch = 0;