use Invariant culture for float parsing (workaround a mono bug)

OpenRA.Game/TraitCreator.cs

@@ -1,25 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using OpenRA.FileFormats;
-using OpenRA.Traits;
-
-namespace OpenRA
-{
-	class TraitCreator
-	{
-		public static object Create( string traitName, World world, Actor actor, ITraitInfo info, TypeDictionary init )
-		{
-			var argsDict = new Dictionary<string, object>
-				{
-					{ "world", world },
-					{ "self", actor },
-					{ "initDict", init },
-					{ "init", new ActorInitializer( actor, init ) },
-					{ "info", info },
-				};
-			return Game.modData.ObjectCreator.CreateObject<object>( traitName, argsDict );
-		}
-	}
-}