go: port combat, chase driver, traps, zapping, death and scores

- fight.c in full: fight/attack with all eight special monster attacks
  (aquator rust, ice freeze, rattlesnake poison, wraith/vampire drains,
  flytrap hold, leprechaun/nymph theft), swing, roll_em dice parsing
  (with a C-semantics atoi — Go's strconv rejects '1x4/...'), hit/miss
  message variants, killed, remove_mon
- chase.c completed: runners, move_monst, relocate, do_chase with
  dragon breath, chase target selection (C's dead oroom comparison in
  relocate is preserved as-is)
- move.c in full: do_move with passgo turning, all eight traps,
  rndmove, rust_armor
- sticks.c completed: do_zap (all 14 sticks), drain, fire_bolt with
  wall bounces; weapons.c completed: missile/do_motion/fall/wield
- rip.c: death tombstone, total_winner, killname; C exit() becomes a
  gameEnd panic that Run will recover
- score.go: top-ten scoreboard as a gob file with lock-file protocol
  replacing the XOR-encrypted C format
- wizard.c: whatis/set_know/teleport; daemons.c stomach
- monster bestiary moved to per-game state (C mutates the flytrap
  damage string during play)

Tests: combat math, kill/removal bookkeeping, monster chase pursuit,
death unwinding, scripted-input headless terminal.

game/daemons.go

@@ -10,6 +10,10 @@ func (g *RogueGame) runDaemon(id DaemonID, arg int) {
 		g.rollwand(arg)
 	case DDoctor:
 		g.doctor(arg)
+	case DStomach:
+		g.stomach(arg)
+	case DRunners:
+		g.runners(arg)
 	case DSwander:
 		g.swander(arg)
 	case DNohaste:
@@ -120,6 +124,57 @@ func (g *RogueGame) nohaste(int) {
 	g.msg("you feel yourself slowing down")
 }
 
+// stomach digests the hero's food (daemons.c stomach).
+func (g *RogueGame) stomach(int) {
+	p := &g.Player
+	origHungry := p.HungryState
+	if p.FoodLeft <= 0 {
+		if p.FoodLeft--; p.FoodLeft < -StarveTime {
+			g.death('s')
+		}
+		// the hero is fainting
+		if g.NoCommand != 0 || g.rnd(5) != 0 {
+			return
+		}
+		g.NoCommand += g.rnd(8) + 4
+		p.HungryState = 3
+		if !g.Options.Terse {
+			g.addmsg("%s", g.chooseStr(
+				"the munchies overpower your motor capabilities.  ",
+				"you feel too weak from lack of food.  "))
+		}
+		g.msg("%s", g.chooseStr("You freak out", "You faint"))
+	} else {
+		oldfood := p.FoodLeft
+		amulet := 0
+		if g.HasAmulet {
+			amulet = 1
+		}
+		p.FoodLeft -= g.ringEat(Left) + g.ringEat(Right) + 1 - amulet
+
+		if p.FoodLeft < MoreTime && oldfood >= MoreTime {
+			p.HungryState = 2
+			g.msg("%s", g.chooseStr(
+				"the munchies are interfering with your motor capabilites",
+				"you are starting to feel weak"))
+		} else if p.FoodLeft < 2*MoreTime && oldfood >= 2*MoreTime {
+			p.HungryState = 1
+			if g.Options.Terse {
+				g.msg("%s", g.chooseStr("getting the munchies", "getting hungry"))
+			} else {
+				g.msg("%s", g.chooseStr("you are getting the munchies",
+					"you are starting to get hungry"))
+			}
+		}
+	}
+	if p.HungryState != origHungry {
+		p.Flags.Clear(IsRun)
+		g.Running = false
+		g.ToDeath = false
+		g.Count = 0
+	}
+}
+
 // comeDown takes the hero down off her acid trip (daemons.c come_down).
 func (g *RogueGame) comeDown(int) {
 	p := &g.Player