Allow mods to customize application title.

OpenRA.Game/Game.cs

@@ -482,9 +482,12 @@ namespace OpenRA
 			Renderer.InitializeDepthBuffer(grid);
 
 			Cursor?.Dispose();
-
 			Cursor = new CursorManager(ModData.CursorProvider);
 
+			var metadata = ModData.Manifest.Metadata;
+			if (!string.IsNullOrEmpty(metadata.WindowTitle))
+				Renderer.Window.SetWindowTitle(metadata.WindowTitle);
+
 			PerfHistory.Items["render"].HasNormalTick = false;
 			PerfHistory.Items["batches"].HasNormalTick = false;
 			PerfHistory.Items["render_world"].HasNormalTick = false;

OpenRA.Game/Graphics/PlatformInterfaces.cs

@@ -72,6 +72,7 @@ namespace OpenRA
 
 		IHardwareCursor CreateHardwareCursor(string name, Size size, byte[] data, int2 hotspot, bool pixelDouble);
 		void SetHardwareCursor(IHardwareCursor cursor);
+		void SetWindowTitle(string title);
 		void SetRelativeMouseMode(bool mode);
 		void SetScaleModifier(float scale);
 

OpenRA.Game/Manifest.cs

@@ -60,6 +60,7 @@ namespace OpenRA
 		public string Version;
 		public string Website;
 		public string WebIcon32;
+		public string WindowTitle;
 		public bool Hidden;
 	}