rogue4: fix most GCC5 warnings.

Converting all function definitions to ANSI style accounts for most of
the change.  This has exposed other problems, such as daemons not
actually being their stated type, that will require more careful
solutions.

rogue4/armor.c

@@ -16,7 +16,8 @@
  * wear:
  *	The player wants to wear something, so let him/her put it on.
  */
-wear()
+void
+wear(void)
 {
     register THING *obj;
     register char *sp;
@@ -50,7 +51,8 @@ wear()
  * take_off:
  *	Get the armor off of the players back
  */
-take_off()
+void
+take_off(void)
 {
     register THING *obj;
 
@@ -77,7 +79,8 @@ take_off()
  * waste_time:
  *	Do nothing but let other things happen
  */
-waste_time()
+void
+waste_time(void)
 {
     do_daemons(BEFORE);
     do_fuses(BEFORE);