Completely rewrite miniyaml tree outputting utility commands

Rename --actor-yaml to --resolved-rules <actor name>
Implement --resolved-sequences <image name>
Implement --resolved-weapons <weapon name>

OpenRA.Mods.Common/UtilityCommands/OutputResolvedRulesCommand.cs

@@ -0,0 +1,46 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+
+namespace OpenRA.Mods.Common.UtilityCommands
+{
+	public class OutputResolvedRulesCommand : IUtilityCommand
+	{
+		string IUtilityCommand.Name { get { return "--resolved-rules"; } }
+
+		bool IUtilityCommand.ValidateArguments(string[] args)
+		{
+			return args.Length == 2 || args.Length == 3;
+		}
+
+		[Desc("ACTOR [PATH/TO/MAP]", "Display the finalized, merged MiniYaml rules for the given actor. Input values are case-sensitive.")]
+		void IUtilityCommand.Run(Utility utility, string[] args)
+		{
+			// HACK: The engine code assumes that Game.ModData is set.
+			var modData = Game.ModData = utility.ModData;
+
+			var key = args[1];
+			var result = Utilities.GetTopLevelNodeByKey(modData, key,
+				manifest => manifest.Rules,
+				map => map.RuleDefinitions,
+				args.Length == 3 ? args[2] : null);
+
+			if (result == null)
+			{
+				Console.WriteLine("Could not find actor '{0}' (name is case-sensitive).", key);
+				Environment.Exit(1);
+			}
+
+			Console.WriteLine(result.Value.Nodes.WriteToString());
+		}
+	}
+}