Added UnitInfo.

- units.txt turned into infantry.txt and vehicles.txt
    - slight sidebar fixes

OpenRa.Game/GameRules/Rules.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using OpenRa.FileFormats;
+using OpenRa.Game.GameRules;
+
+namespace OpenRa.Game
+{
+	static class Rules
+	{
+		public static UnitInfo UnitInfo;
+
+		// TODO: load rules from the map, where appropriate.
+		public static void LoadRules()
+		{
+			UnitInfo = new UnitInfo( new IniFile( FileSystem.Open( "rules.ini" ) ) );
+		}
+	}
+}