Dont' Emit the UTF8 Identifier in the response file

Author: dellis1972

src/Xamarin.Android.Build.Tasks/Tasks/Aot.cs

@@ -464,7 +464,10 @@ bool RunAotCompiler (string assembliesPath, string aotCompiler, string aotOption
 			var stderr_completed = new ManualResetEvent (false);
 			var responseFile = Path.GetTempFileName ();
 			try {
-				File.WriteAllText (responseFile, aotOptions + " " + assembly);
+				using (var sw = new StreamWriter (path: responseFile, append: false,
+						encoding: new UTF8Encoding (encoderShouldEmitUTF8Identifier: false))) {
+					sw.WriteLine (aotOptions + " " + assembly);
+				}
 
 				var psi = new ProcessStartInfo () {
 					FileName = aotCompiler,