Rename "pathos" package to "path".

pkg/intl/test/message_extraction/extract_to_json.dart

 #!/usr/bin/env 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.
 
 /**
  * This script uses the extract_messages.dart library to find the Intl.message
  * calls in the target dart files and produces intl_messages.json containing the
  * information on those messages. It uses the analyzer-experimental parser
  * to find the information.
  *
  * This is intended to test the basic functioning of extracting messages and
  * serve as an example for how a program to extract them to a translation
  * file format could work. In the tests, this file is then run through a
  * simulated translation and the results of that are used to generate code. See
  * message_extraction_test.dart
  *
  * If the environment variable INTL_MESSAGE_OUTPUT is set then it will use
  * that as the output directory, otherwise it will use the working directory.
  */
 library extract_to_json;
 
 import 'dart:io';
 import 'package:intl/extract_messages.dart';
 import 'dart:json' as json;
-import 'package:pathos/path.dart' as path;
+import 'package:path/path.dart' as path;
 import 'package:intl/src/intl_message.dart';
 import 'package:args/args.dart';
 
 main() {
   var args = new Options().arguments;
   var targetDir;
   var parser = new ArgParser();
   parser.addFlag("suppress-warnings", defaultsTo: false,
       callback: (x) => suppressWarnings = x);
 
@@ skipping 30 matching lines @@
  * Convert the [MainMessage] to a trivial JSON format.
  */
 Map toJson(MainMessage message) {
   var result = new Map<String, Object>();
   for (var attribute in message.attributeNames) {
     result[attribute] = message[attribute];
   }
   result["message"] = message.expanded(leaveTheInterpolationsInDartForm);
   return result;
 }