Introducing per-player shrouds.

- Each player has their own shroud and their visibility does not extend outside of the shroud. 
- Units and buildings can no longer target other units outside of their visibility. Buildings can still be targetted if they have been explored.
- GPS will provide visibility in the fog-of-war.
- Spies that infiltrate radar domes will gain their victim's exploration and reset it on all clients (if the victim does not have GPS)

OpenRA.Mods.RA/ConquestVictoryConditions.cs

@@ -62,7 +62,7 @@ namespace OpenRA.Mods.RA
 
 			if (self.Owner == self.World.LocalPlayer)
 			{
-				self.World.LocalShroud.Disabled = true;
+				self.World.RenderedShroud.Disabled = true;
 				Game.RunAfterDelay(Info.NotificationDelay, () =>
 				{
 					if (Game.IsCurrentWorld(self.World))
@@ -79,7 +79,7 @@ namespace OpenRA.Mods.RA
 			Game.Debug("{0} is victorious.".F(self.Owner.PlayerName));
 			if (self.Owner == self.World.LocalPlayer)
 			{
-				self.World.LocalShroud.Disabled = true;
+				self.World.RenderedShroud.Disabled = true;
 				Game.RunAfterDelay(Info.NotificationDelay, () => Sound.PlayNotification(self.Owner, "Speech", "Win", self.Owner.Country.Race));
 			}
 		}