Update utils to new library syntax.

utils/tests/template/test_list.dart

 // Sample for #each templates:
 //
 //       applications.tmpl
 
-#import('dart:html');
-#source('applications.dart');
+import 'dart:html';
+part 'applications.dart';
 
 class Product {
   String name;
   int users;
 
   Product(this.name, this.users);
 }
 
 void main() {
   List<Product> products = [];
   products.add(new Product("Gmail", 75000000));
   products.add(new Product("Talk", 5000000));
   products.add(new Product("iGoogle", 2000000));
   products.add(new Product("Dart", 2000));
 
   var form = new Applications(products);
 
   document.body.elements.add(form.root);
 }