trimming some more fat

OpenRa.Game/Exts.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRa.Game
+{
+	static class Exts
+	{
+		public static string F(this string fmt, params object[] args)
+		{
+			return string.Format(fmt, args);
+		}
+	}
+}