Update utils to new library syntax.

utils/archive/input_stream.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("input_stream");
+library input_stream;
 
-#import("archive.dart", prefix: "archive");
-#import("entry.dart");
-#import("read_request.dart");
-#import("utils.dart");
+import 'archive.dart' as archive;
+import 'entry.dart';
+import 'read_request.dart';
+import 'utils.dart';
 
 /**
  * A stream of [ArchiveEntry]s being read from an archive.
  *
  * This is accessible via [ArchiveReader].
  */
 class ArchiveInputStream {
   /**
    * The id of the underlying archive.
    *
@@ skipping 133 matching lines @@
       if (entry.isInputOpen) return entry.inputComplete;
       return new Future.immediate(null);
     });
     future.onComplete((_) {
       _currentEntry = null;
       entry.close();
     });
     return future;
   }
 }