dart:io | Add FileSystemEntity.parent, make File.directory call it.

sdk/lib/io/file.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 /**
  * FileMode describes the modes in which a file can be opened.
  */
 class FileMode {
@@ skipping 63 matching lines @@
    * instance for the renamed file.
    *
    * If [newPath] identifies an existing file, that file is
    * replaced. If [newPath] identifies an existing directory the
    * operation fails and an exception is thrown.
    */
   File renameSync(String newPath);
 
   /**
    * Get a [Directory] object for the directory containing this
-   * file.
+   * file. Deprecated: Replaced by [FileSystemEntity.parent].
+   * Will be removed on Oct 25, 2013.
    */
+  @deprecated
   Directory get directory;
 
   /**
    * Get the length of the file. Returns a [:Future<int>:] that
    * completes with the length in bytes.
    */
   Future<int> length();
 
   /**
    * Synchronously get the length of the file.
@@ skipping 447 matching lines @@
       }
     } else if (osError != null) {
       sb.write(": osError");
       if (path != null) {
         sb.write(", path = $path");
       }
     }
     return sb.toString();
   }
 }