Add update.properties file to com.google.dart.tools.core_*.jar file

dart/tools/create_editor.py

 #!/usr/bin/env python
 #
 # 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.
 #
 # A script which will be invoked from gyp to create a build of the editor.
 #
 # Usage: ./tools/create_editor.py
 #            [--mode <mode>] [--arch <arch>] [--out <output>] [--build <build>]
@@ skipping 176 matching lines @@
       join('third_party', 'bzip2', 'bzip2.jar'),
       '-Dbuild.out=' + OUTPUT,
       '-Dbuild.configs=' + buildConfig,
       '-Dbuild.revision=' + utils.GetSVNRevision(),
       '-Ddart.version.full=' + utils.GetVersion(),
       '-Dbuild.root=' + GetEclipseBuildRoot(),
       '-Dbuild.downloads=' + GetDownloadCache(),
       '-Dbuild.source=' + os.path.abspath('editor'),
       '-Dbuild.dart.sdk=' + GetSdkPath(),
       '-Dbuild.no.properties=true',
+      '-Dbuild.channel=' + utils.GetChannel(),
       '-buildfile',
       buildScript]
   print build_cmd
   buildRcpStatus = subprocess.call(build_cmd, shell=utils.IsWindows())
 
   if buildRcpStatus != 0:
     sys.exit(buildRcpStatus)
 
   # build_rcp.xml will put the built editor archive in the OUTPUT directory
   # (dart-editor-macosx.cocoa.x86.zip). It contains the editor application in a
   # dart/ subdirectory. We unzip the contents of the archive into OUTPUT. It
   # will use the ../dart-sdk directory as its SDK.
   archives = glob.glob(join(OUTPUT, '*.zip'))
 
   if archives:
     ProcessEditorArchive(arch, archives[0], OUTPUT)
 
   if os.path.exists(GetEditorTemp()):
     shutil.rmtree(GetEditorTemp())
 
   print('\nEditor build successful')
 
 
 if __name__ == '__main__':
   sys.exit(Main())