Update utils to new library syntax.

utils/archive/entry.dart

 // 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.
 
-#library("entry");
+library entry;
 
-#import("dart:io");
-#import("archive.dart", prefix: "archive");
-#import("entry_request.dart");
-#import("read_request.dart", prefix: 'read');
-#import("utils.dart");
+import 'dart:io';
+import 'archive.dart' as archive;
+import 'entry_request.dart';
+import 'read_request.dart' as read;
+import 'utils.dart';
 
 /**
  * A single file in an archive.
  *
  * This is accessible via [ArchiveInputStream.onEntry].
  */
 class ArchiveEntry {
   /**
    * The various properties of this archive entry, as sent over from the C
    * extension.
@@ skipping 306 matching lines @@
 class CompleteArchiveEntry extends ArchiveEntry {
   /** The contents of the entry as bytes. */
   final List<int> contentBytes;
 
   /** The contents of the entry as a string. */
   String get contents => new String.fromCharCodes(contentBytes);
 
   CompleteArchiveEntry._(List properties, this.contentBytes)
     : super.internal(properties, null);
 }