Make RenderUnit require IFacing; RenderSimple can be used for crates, mines, etc; fix husk facing init

OpenRA.Mods.RA/Air/Aircraft.cs

@@ -23,6 +23,7 @@ namespace OpenRA.Mods.RA.Air
 	{
 		public object Create(ActorInitializer init) { return new DebugAircraftFacing(init.self); }
 	}
+
 	public class DebugAircraftFacing : ISync
 	{
 		readonly Aircraft a;
@@ -34,6 +35,7 @@ namespace OpenRA.Mods.RA.Air
 	{
 		public object Create(ActorInitializer init) { return new DebugAircraftSubPxX(init.self); }
 	}
+
 	public class DebugAircraftSubPxX : ISync
 	{
 		readonly Aircraft a;
@@ -45,6 +47,7 @@ namespace OpenRA.Mods.RA.Air
 	{
 		public object Create(ActorInitializer init) { return new DebugAircraftSubPxY(init.self); }
 	}
+
 	public class DebugAircraftSubPxY : ISync
 	{
 		readonly Aircraft a;
@@ -56,6 +59,7 @@ namespace OpenRA.Mods.RA.Air
 	{
 		public object Create(ActorInitializer init) { return new DebugAircraftAltitude(init.self); }
 	}
+
 	public class DebugAircraftAltitude : ISync
 	{
 		readonly Aircraft a;
@@ -63,7 +67,7 @@ namespace OpenRA.Mods.RA.Air
 		[Sync] public int foo { get { return a.Altitude; } }
 	}
 	
-	public class AircraftInfo : ITraitInfo
+	public class AircraftInfo : ITraitInfo, IFacingInfo
 	{
 		public readonly int CruiseAltitude = 30;
 		[ActorReference]

OpenRA.Mods.RA/Husk.cs

@@ -16,7 +16,7 @@ using OpenRA.Traits.Activities;
 
 namespace OpenRA.Mods.RA
 {
-	class HuskInfo : ITraitInfo
+	class HuskInfo : ITraitInfo, IFacingInfo
 	{
 		public object Create( ActorInitializer init ) { return new Husk( init ); }
 	}

OpenRA.Mods.RA/Move/Mobile.cs

@@ -19,7 +19,7 @@ using OpenRA.Traits.Activities;
 
 namespace OpenRA.Mods.RA.Move
 {
-    public class MobileInfo : ITraitInfo
+    public class MobileInfo : ITraitInfo, IFacingInfo
     {
         [FieldLoader.LoadUsing("LoadSpeeds")]
         public readonly Dictionary<string, TerrainInfo> TerrainSpeeds;

OpenRA.Mods.RA/Render/RenderUnit.cs

@@ -14,7 +14,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA.Render
 {
-	public class RenderUnitInfo : RenderSimpleInfo
+	public class RenderUnitInfo : RenderSimpleInfo, Requires<IFacingInfo>
 	{
 		public override object Create(ActorInitializer init) { return new RenderUnit(init.self); }
 	}