i changed the file AvrdudeUploader.java the way to make arduino able to parse the new option , reading it from the preferences.txt file.
and then i also changed the preference gui to add the small addon box.
that's it 
i changed the file AvrdudeUploader.java the way to make arduino able to parse the new option , reading it from the preferences.txt file.
and then i also changed the preference gui to add the small addon box.
that's it