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/daemons.c

@@ -19,7 +19,8 @@ int between = 0;
  * doctor:
  *	A healing daemon that restors hit points after rest
  */
-doctor()
+void
+doctor(void)
 {
     register int lv, ohp;
 
@@ -50,7 +51,8 @@ doctor()
  * Swander:
  *	Called when it is time to start rolling for wandering monsters
  */
-swander()
+void
+swander(void)
 {
     start_daemon(rollwand, 0, BEFORE);
 }
@@ -59,7 +61,8 @@ swander()
  * rollwand:
  *	Called to roll to see if a wandering monster starts up
  */
-rollwand()
+void
+rollwand(void)
 {
     if (++between >= 4)
     {
@@ -77,7 +80,8 @@ rollwand()
  * unconfuse:
  *	Release the poor player from his confusion
  */
-unconfuse()
+void
+unconfuse(void)
 {
     player.t_flags &= ~ISHUH;
     msg("you feel less confused now");
@@ -87,7 +91,8 @@ unconfuse()
  * unsee:
  *	Turn off the ability to see invisible
  */
-unsee()
+void
+unsee(void)
 {
     register THING *th;
 
@@ -104,7 +109,8 @@ unsee()
  * sight:
  *	He gets his sight back
  */
-sight()
+void
+sight(void)
 {
     if (on(player, ISBLIND))
     {
@@ -120,7 +126,8 @@ sight()
  * nohaste:
  *	End the hasting
  */
-nohaste()
+void
+nohaste(void)
 {
     player.t_flags &= ~ISHASTE;
     msg("you feel yourself slowing down");
@@ -130,7 +137,8 @@ nohaste()
  * stomach:
  *	Digest the hero's food
  */
-stomach()
+void
+stomach(void)
 {
     register int oldfood;