Remove old isolate API and update all code in the repository to use

tests/isolate/mint_maker_test.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
 // Things that should be "auto-generated" are between AUTO START and
 // AUTO END (or just AUTO if it's a single line).
 
 #library("MintMakerTest");
 #import("dart:isolate");
 #import('../../lib/unittest/unittest.dart');
 
@@ skipping 143 matching lines @@
   }
 
 
   SendPort purse_;
 }
 // AUTO END
 
 
 // AUTO STATUS UNCLEAR!
 
-class MintMakerWrapperIsolate extends Isolate {
-  MintMakerWrapperIsolate() : super() { }
-  void main() {
-    this.port.receive((var message, SendPort replyTo) {
-      Mint mint = new Mint();
-      replyTo.send([ mint.port ], null);
-    });
-  }
+mintMakerWrapper() {
+  port.receive((var message, SendPort replyTo) {
+    Mint mint = new Mint();
+    replyTo.send([ mint.port ], null);
+  });
 }
 
 class MintMakerWrapper {
   MintMakerWrapper() {
-    port_ = new MintMakerWrapperIsolate().spawn();
+    port_ = spawnFunction(mintMakerWrapper);
   }
 
   void makeMint(handleMint(MintWrapper mint)) {
-    port_.then((SendPort port) {
-      port.call(null).then((var message) {
-        SendPort mint = message[0];
-        handleMint(new MintWrapper(mint));
-      });
+    port_.call(null).then((var message) {
+      SendPort mint = message[0];
+      handleMint(new MintWrapper(mint));
     });
   }
 
   Future<SendPort> port_;
 }
 
 _checkBalance(PurseWrapper wrapper, expected) {
   wrapper.queryBalance(expectAsync1((int balance) {
     expect(balance, equals(expected));
   }));
@@ skipping 61 matching lines @@
     sprouted...deposit(purse, 5);
     Expect.equals(0 + 5, sprouted.queryBalance());
     Expect.equals(100 - 5, purse.queryBalance());
 
     sprouted...deposit(purse, 42);
     Expect.equals(0 + 5 + 42, sprouted.queryBalance());
     Expect.equals(100 - 5 - 42, purse.queryBalance());
   }
   */
 }