Make the rgoue branch Go-only

The port is complete, so the C sources and their build system
(autoconf/automake inputs, Makefiles, Visual Studio project, doc
templates, RPM spec, C build/modernization notes) leave this branch;
they live on in master/modern-rogue for reference.

Also ports the last missing wizard command (things.c pr_list/pr_spec,
the '*' item-probability listing), rewrites README.md for the Go port,
and updates ARCHITECTURE.md's layout notes (game/ has no third-party
imports; tcell lives in term/).

Kept: LICENSE.TXT, rogue.png, rogue.desktop, ARCHITECTURE.md.

game/things.go

@@ -500,3 +500,47 @@ func (g *RogueGame) nameit(pb *strings.Builder, obj *Object, typ, which string,
 
 // nullstr returns an empty string (things.c nullstr).
 func nullstr(*RogueGame, *Object) string { return "" }
+
+// prList lists possible potions, scrolls, etc. for the wizard (things.c
+// pr_list).
+func (g *RogueGame) prList() {
+	if !g.Options.Terse {
+		g.addmsg("for ")
+	}
+	g.addmsg("what type")
+	if !g.Options.Terse {
+		g.addmsg(" of object do you want a list")
+	}
+	g.msg("? ")
+	ch := g.readchar()
+	switch ch {
+	case Potion:
+		g.prSpec(g.Items.Potions[:])
+	case Scroll:
+		g.prSpec(g.Items.Scrolls[:])
+	case Ring:
+		g.prSpec(g.Items.Rings[:])
+	case Stick:
+		g.prSpec(g.Items.Sticks[:])
+	case Armor:
+		g.prSpec(g.Items.Armors[:])
+	case Weapon:
+		g.prSpec(g.Items.Weapons[:MaxWeapons])
+	}
+}
+
+// prSpec prints a specific list of possible items to choose from
+// (things.c pr_spec).
+func (g *RogueGame) prSpec(info []ObjInfo) {
+	lastprob := 0
+	i := byte('0')
+	for idx := range info {
+		if i == '9'+1 {
+			i = 'a'
+		}
+		g.addLine("%c: %s (%d%%)", i, info[idx].Name, info[idx].Prob-lastprob)
+		lastprob = info[idx].Prob
+		i++
+	}
+	g.endLine()
+}