Get dartdoc in the SDK and working correctly.

utils/apidoc/apidoc.dart

Index: utils/apidoc/apidoc.dart
diff --git a/utils/apidoc/apidoc.dart b/utils/apidoc/apidoc.dart
index 3d5850c5a02e7f152f56e372e6af294f17db6ebf..1ed08976a81b199ebf3524e486f02169a114bc38 100644
--- a/utils/apidoc/apidoc.dart
+++ b/utils/apidoc/apidoc.dart
@@ -1,4 +1,4 @@
-// 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.
 
@@ -12,7 +12,7 @@
 #import('../../frog/lang.dart');
 #import('../../frog/file_system_vm.dart');
 #import('../../frog/file_system.dart');
-#import('../dartdoc/dartdoc.dart', prefix: 'doc');
+#import('../../lib/dartdoc/dartdoc.dart', prefix: 'doc');
 
 HtmlDiff _diff;