expose appropriate *Inits, and make them work in editor

OpenRA.Mods.RA/Activities/Transform.cs

@@ -10,8 +10,6 @@
 
 using System.Linq;
 using OpenRA.FileFormats;
-using OpenRA.Mods.RA.Buildings;
-using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA.Activities

OpenRA.Mods.RA/Air/Aircraft.cs

@@ -67,7 +67,7 @@ namespace OpenRA.Mods.RA.Air
 		[Sync] public int foo { get { return a.Altitude; } }
 	}
 
-	public class AircraftInfo : ITraitInfo, IFacingInfo
+	public class AircraftInfo : ITraitInfo, IFacingInfo, UsesInit<AltitudeInit>, UsesInit<LocationInit>, UsesInit<FacingInit>
 	{
 		public readonly int CruiseAltitude = 30;
 		[ActorReference]

OpenRA.Mods.RA/Buildings/Building.cs

@@ -19,7 +19,7 @@ namespace OpenRA.Mods.RA.Buildings
 	public class GivesBuildableAreaInfo : TraitInfo<GivesBuildableArea> {}
 	public class GivesBuildableArea {}
 
-	public class BuildingInfo : ITraitInfo
+	public class BuildingInfo : ITraitInfo, UsesInit<LocationInit>
 	{
 		public readonly int Power = 0;
 		public readonly string[] TerrainTypes = {};

OpenRA.Mods.RA/Move/Mobile.cs

@@ -18,7 +18,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA.Move
 {
-	public class MobileInfo : ITraitInfo, IFacingInfo
+	public class MobileInfo : ITraitInfo, IFacingInfo, UsesInit<FacingInit>, UsesInit<LocationInit>, UsesInit<SubCellInit>
 	{
 		[FieldLoader.LoadUsing("LoadSpeeds")]
 		public readonly Dictionary<string, TerrainInfo> TerrainSpeeds;

OpenRA.Mods.RA/Turreted.cs

@@ -12,7 +12,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA
 {
-	public class TurretedInfo : ITraitInfo
+	public class TurretedInfo : ITraitInfo, UsesInit<TurretFacingInit>
 	{
 		public readonly int ROT = 255;
 		public readonly int InitialFacing = 128;