dart:io | Remove uses of Options class from standalone tests. Mark Options deprecated.

tests/standalone/io/process_std_io_script2.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Utility script to echo strings in various formats to stdout or
 // stderr.
 
 import "dart:convert";
 import "dart:io";
 
 writeData(data, encoding, stream) {
   if (stream == "stdout") {
     if (encoding == null) {
       stdout.add(data);
     } else {
       stdout.encoding = encoding;
       stdout.write(data);
     }
   } else if (stream == "stderr") {
     if (encoding == null) {
       stderr.add(data);
     } else {
       stderr.encoding = encoding;
       stderr.write(data);
     }
   }
 }
 
-main() {
+main(List<String> arguments) {
   var asciiString = 'abc';
   var latin1String = 'æøå';
   var utf8String = new String.fromCharCodes([955]);
   var binary = [0, 1, 2];
-  var options = new Options();
-  if (options.arguments.length > 1) {
-    var stream = options.arguments[1];
-    if (options.arguments[0] == "ascii") {
+  if (arguments.length > 1) {
+    var stream = arguments[1];
+    if (arguments[0] == "ascii") {
       writeData(asciiString, ASCII, stream);
-    } else if (options.arguments[0] == "latin1") {
+    } else if (arguments[0] == "latin1") {
       writeData(latin1String, LATIN1, stream);
-    } else if (options.arguments[0] == "utf8") {
+    } else if (arguments[0] == "utf8") {
       writeData(utf8String, UTF8, stream);
-    } else if (options.arguments[0] == "binary") {
+    } else if (arguments[0] == "binary") {
       writeData(binary, null, stream);
     }
   }
 }