Move pub into sdk/lib/_internal.

sdk/bin/pub.bat

Index: sdk/bin/pub.bat
diff --git a/sdk/bin/pub.bat b/sdk/bin/pub.bat
index dba1cafa093d027442c2d79b74fa6993a5932929..e2c7a8a2e5d9803dc0583811d8bce10693733a6b 100644
--- a/sdk/bin/pub.bat
+++ b/sdk/bin/pub.bat
@@ -1,17 +1,16 @@
 @echo off
-REM Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-REM for details. All rights reserved. Use of this source code is governed by a
-REM BSD-style license that can be found in the LICENSE file.
+:: 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.
 
-REM Run pub.dart on the Dart VM. This script assumes the Dart SDK's directory
-REM structure.
+:: Run pub.dart on the Dart VM. This script assumes the Dart SDK's directory
+:: structure.
 
 set SCRIPTPATH=%~dp0
 
-REM Does the string have a trailing slash? If so, remove it.
+:: Does the string have a trailing slash? If so, remove it.
 if %SCRIPTPATH:~-1%==\ set SCRIPTPATH=%SCRIPTPATH:~0,-1%
 
-REM Set DART_SDK so pub can find SDK packages.
-set DART_SDK=%SCRIPTPATH%\..\
-
-"%SCRIPTPATH%\dart" "%SCRIPTPATH%\..\util\pub\pub.dart" %*
+:: The trailing forward slash in --package-root is required because of issue
+:: 9499.
+"%SCRIPTPATH%\dart.exe" --package-root="%SCRIPTPATH%\..\packages/" "%SCRIPTPATH%\..\lib\_internal\pub\bin\pub.dart" %*