Move frog/leg to lib/compiler/implementation.

frog/leg/io/io.dart

Index: frog/leg/io/io.dart
===================================================================
--- frog/leg/io/io.dart	(revision 5925)
+++ frog/leg/io/io.dart	(working copy)
@@ -1,15 +0,0 @@
-// Copyright (c) 2011, 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("io");
-
-#import("dart:io");
-
-String join(List<String> strings) => Strings.join(strings, '/');
-
-String getCurrentDirectory() {
-  String dir = new File(".").fullPathSync();
-  if (dir.endsWith("/")) return dir;
-  return "$dir/";
-}