Re-land socket refactor with fixes for Windows.

runtime/bin/socket_patch.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.
 
 @patch
 class RawServerSocket {
   @patch
   static Future<RawServerSocket> bind(address, int port,
       {int backlog: 0, bool v6Only: false, bool shared: false}) {
     return _RawServerSocket.bind(address, port, backlog, v6Only, shared);
@@ skipping 1046 matching lines @@
   nativeAvailable() native "Socket_Available";
   nativeRead(int len) native "Socket_Read";
   nativeRecvFrom() native "Socket_RecvFrom";
   nativeWrite(List<int> buffer, int offset, int bytes)
       native "Socket_WriteList";
   nativeSendTo(List<int> buffer, int offset, int bytes, List<int> address,
       int port) native "Socket_SendTo";
   nativeCreateConnect(List<int> addr, int port) native "Socket_CreateConnect";
   nativeCreateBindConnect(List<int> addr, int port, List<int> sourceAddr)
       native "Socket_CreateBindConnect";
-  bool isBindError(int errorNumber) native "Socket_IsBindError";
+  bool isBindError(int errorNumber) native "SocketBase_IsBindError";
   nativeCreateBindListen(List<int> addr, int port, int backlog, bool v6Only,
       bool shared) native "ServerSocket_CreateBindListen";
   nativeCreateBindDatagram(List<int> addr, int port, bool reuseAddress)
       native "Socket_CreateBindDatagram";
   nativeAccept(_NativeSocket socket) native "ServerSocket_Accept";
   int nativeGetPort() native "Socket_GetPort";
   List nativeGetRemotePeer() native "Socket_GetRemotePeer";
   int nativeGetSocketId() native "Socket_GetSocketId";
   OSError nativeGetError() native "Socket_GetError";
   nativeGetOption(int option, int protocol) native "Socket_GetOption";
@@ skipping 725 matching lines @@
     } else {
       _socket.close();
     }
   }
 }
 
 Datagram _makeDatagram(
     List<int> data, String address, List<int> in_addr, int port) {
   return new Datagram(data, new _InternetAddress(address, null, in_addr), port);
 }