add ISync to all traits that have [Sync] members

OpenRA.Mods.RA/Buildings/Building.cs

@@ -61,7 +61,7 @@ namespace OpenRA.Mods.RA.Buildings
 		}
 	}
 
-	public class Building : INotifyDamage, IResolveOrder, IOccupySpace, INotifyCapture
+	public class Building : INotifyDamage, IResolveOrder, IOccupySpace, INotifyCapture, ISync
 	{
 		readonly Actor self;
 		public readonly BuildingInfo Info;

OpenRA.Mods.RA/Buildings/CanPowerDown.cs

@@ -17,7 +17,7 @@ namespace OpenRA.Mods.RA.Buildings
 		public object Create(ActorInitializer init) { return new CanPowerDown(init); }
 	}
 
-	public class CanPowerDown : IResolveOrder, IDisable
+	public class CanPowerDown : IResolveOrder, IDisable, ISync
 	{
 		[Sync]
 		bool disabled = false;

OpenRA.Mods.RA/Buildings/PowerManager.cs

@@ -17,9 +17,9 @@ namespace OpenRA.Mods.RA.Buildings
 	{
 		public readonly int AdviceInterval = 250;
 		public object Create(ActorInitializer init) { return new PowerManager(init, this); }
-	}
-
-	public class PowerManager : ITick
+	}
+
+	public class PowerManager : ITick, ISync
 	{
 		PowerManagerInfo Info;
 		Player Player;

OpenRA.Mods.RA/Buildings/RepairableBuilding.cs

@@ -20,9 +20,9 @@ namespace OpenRA.Mods.RA.Buildings
 		public readonly float RepairRate = 0.016f;
 		public readonly int RepairStep = 7;
 		public object Create(ActorInitializer init) { return new RepairableBuilding(init.self, this); }
-	}
-
-	public class RepairableBuilding : ITick, IResolveOrder
+	}
+
+	public class RepairableBuilding : ITick, IResolveOrder, ISync
 	{
 		[Sync]
 		bool isRepairing = false;