Removes dartc reliance on its own libraries, now can be targeted at any implementation's libraries

lib/isolate/isolate_runtime.dart

Index: lib/isolate/isolate_runtime.dart
diff --git a/compiler/lib/implementation/object.js b/lib/isolate/isolate_runtime.dart
similarity index 54%
rename from compiler/lib/implementation/object.js
rename to lib/isolate/isolate_runtime.dart
index 30f1019ad42dd8e1ee1b19193d76c7a207eca176..7265ed6b2dba9744806600a6ac7f314562c23539 100644
--- a/compiler/lib/implementation/object.js
+++ b/lib/isolate/isolate_runtime.dart
@@ -1,5 +1,6 @@
-// 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.
 
-
+#source("isolate_api.dart");
+#source("runtime/isolate.dart");