Rename snapshot, other user-visible parts of docgen to dartdocgen.

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 95 matching lines @@
   if dest_file.endswith('_sdk'):
     dest_file = dest_file.replace('_sdk', '')
 
   src = src_file + file_extension
   dest = join(dest_dir, dest_file + file_extension)
   Copy(src, dest)
 
 
 def CopyDartScripts(home, sdk_root):
   for executable in ['dart2js', 'dartanalyzer_sdk', 'dartfmt', 'docgen',
-                     'pub_sdk']:
+                     'dartdocgen', 'pub_sdk']:
     CopyShellScript(os.path.join(home, 'sdk', 'bin', executable),
                     os.path.join(sdk_root, 'bin'))
 
 
 def CopySnapshots(snapshots, sdk_root):
   for snapshot in ['analysis_server', 'dart2js', 'dartanalyzer', 'dartfmt',
                    'utils_wrapper', 'pub']:
     snapshot += '.dart.snapshot'
     copyfile(join(snapshots, snapshot),
              join(sdk_root, 'bin', 'snapshots', snapshot))
@@ skipping 131 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())