Change core lib, dart2js, and more for new optional parameters syntax

runtime/bin/stream_util.dart

 // Copyright (c) 2012, 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.
 
 class _BaseDataInputStream {
   abstract int available();
 
   List<int> read([int len]) {
     if (_closeCallbackCalled || _scheduledCloseCallback != null) return null;
     int bytesToRead = available();
@@ skipping 13 matching lines @@
 
   int readInto(List<int> buffer, [int offset = 0, int len]) {
     if (_closeCallbackCalled || _scheduledCloseCallback != null) return 0;
     if (len === null) len = buffer.length;
     if (offset < 0) throw new StreamException("Illegal offset $offset");
     if (len < 0) throw new StreamException("Illegal length $len");
     int bytesToRead = min(len, available());
     return _readInto(buffer, offset, bytesToRead);
   }
 
-  void pipe(OutputStream output, [bool close = true]) {
+  void pipe(OutputStream output, {bool close: true}) {
     _pipe(this, output, close: close);
   }
 
   void close() {
     _cancelScheduledDataCallback();
     _close();
     _checkScheduleCallbacks();
   }
 
   bool get closed => _closeCallbackCalled;
@@ skipping 93 matching lines @@
   bool _closeCallbackCalled = false;
 
   Timer _scheduledDataCallback;
   Timer _scheduledCloseCallback;
   Function _clientDataHandler;
   Function _clientCloseHandler;
   Function _clientErrorHandler;
 }
 
 
-void _pipe(InputStream input, OutputStream output, [bool close]) {
+void _pipe(InputStream input, OutputStream output, {bool close}) {
   Function pipeDataHandler;
   Function pipeCloseHandler;
   Function pipeNoPendingWriteHandler;
 
   Function _inputCloseHandler;
 
   pipeDataHandler = () {
     List<int> data;
     while ((data = input.read()) !== null) {
       if (!output.write(data)) {
@@ skipping 22 matching lines @@
   output.onNoPendingWrites = null;
 }
 
 
 class _BaseOutputStream {
   bool writeString(String string, [Encoding encoding = Encoding.UTF_8]) {
     if (string.length > 0) {
       // Encode and write data.
       _StringEncoder encoder = _StringEncoders.encoder(encoding);
       List<int> data = encoder.encodeString(string);
-      return write(data, copyBuffer: false);
+      return write(data, false);
     }
     return true;
   }
 
   void set onError(void callback(e)) {
     _onError = callback;
   }
 
   void _reportError(e) {
     if (_onError != null) {
       _onError(e);
     } else {
       throw e;
     }
   }
 
   Function _onError;
 }