Add codec and convert to sdk-build script.

tools/create_sdk.py

 #!/usr/bin/env python
 #
 # 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.
 #
 # A script which will be invoked from gyp to create an SDK.
 #
 # Usage: create_sdk.py sdk_directory
 #
@@ skipping 179 matching lines @@
   #
   # Create and populate lib/{core, crypto, isolate, json, utf, ...}.
   #
 
   os.makedirs(join(LIB, 'html'))
 
   for library in [join('_internal', 'compiler'),
                   join('_internal', 'dartdoc'),
                   join('_internal', 'pub', 'resource'),
                   join('_internal', 'lib'),
-                  'async', 'collection', '_collection_dev', 'core',
-                  'crypto', 'io', 'isolate',
+                  'async', 'collection', '_collection_dev', 'codec', 'convert',
+                  'core', 'crypto', 'io', 'isolate',
                   join('chrome', 'dart2js'), join('chrome', 'dartium'),
                   join('html', 'dart2js'), join('html', 'dartium'),
                   join('html', 'html_common'),
                   join('indexed_db', 'dart2js'), join('indexed_db', 'dartium'),
                   'json', 'math', 'mirrors', 'typed_data',
                   join('svg', 'dart2js'), join('svg', 'dartium'),
                   'utf',
                   join('web_audio', 'dart2js'), join('web_audio', 'dartium'),
                   join('web_gl', 'dart2js'), join('web_gl', 'dartium'),
                   join('web_sql', 'dart2js'), join('web_sql', 'dartium')]:
@@ skipping 42 matching lines @@
     with open(os.path.join(SDK_tmp, 'revision'), 'w') as f:
       f.write(revision + '\n')
       f.close()
 
   Copy(join(HOME, 'README.dart-sdk'), join(SDK_tmp, 'README'))
 
   move(SDK_tmp, SDK)
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))