Rename "pathos" package to "path".

pkg/intl/test/message_extraction/message_extraction_test.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.
 
 library message_extraction_test;
 
 import 'package:unittest/unittest.dart';
 import 'dart:io';
 import 'dart:async';
-import 'package:pathos/path.dart' as path;
+import 'package:path/path.dart' as path;
 import '../data_directory.dart';
 
 final dart = Platform.executable;
 
 // TODO(alanknight): We have no way of knowing what the package-root is,
 // so when we're running under the test framework, which sets the
 // package-root, we use a horrible hack and infer it from the executable.
 final packageDir = _findPackageDir(dart);
 
 /**
@@ skipping 221 matching lines @@
   verify('Dies ist Plural (2).');
   verify('Alice ging zu ihrem house');
   verify('Bob ging zu seinem house');
   verify('cat ging zu seinem litter box');
   verify('Alice, Bob gingen zum magasin');
   verify('Alice ging in dem magasin');
   verify('Niemand ging zu magasin');
   verify('Bob, Bob gingen zum magasin');
   verify('Alice, Alice gingen zum magasin');
 }