Rename "pathos" package to "path".

sdk/lib/io/path.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.
 
 part of dart.io;
 
 /**
  * A Path is an immutable wrapper of a String, with additional member functions
  * for useful path manipulations and queries.
  * On the Windows platform, Path also converts from native paths to paths using
  * '/' as a path separator, and vice versa.
  *
  * Joining of paths and path normalization handle '.' and '..' in the usual way.
  *
- * *Path is deprecated. Use package pathos. Path will be removed the 11th of
+ * *Path is deprecated. Use package path. Path will be removed the 11th of
  * August 2013.*
  */
 @deprecated
 abstract class Path {
   /**
    * Creates a Path from a String that uses the native filesystem's conventions.
    *
    * On Windows, this converts '\' to '/' and has special handling for drive
    * letters and shares.
    *
@@ skipping 179 matching lines @@
 
   /**
    * The part of [filename] after the last '.', or '' if [filename]
    * contains no '.'.  If [filename] is '.' or '..', returns ''.
    *
    *     new Path('tiger.svg').extension == 'svg'
    *     new Path('/src/dart/dart_secrets').extension == ''
    */
   String get extension;
 }