This is a DevMode.java implementation able to run superdevmode.
It's compatible with GWT 2.5.x and 2.6.x
You have to put this in your classpath before gwt-dev.jar, also you need gwt-codeserver.jar, then you can run the launcher with the parameter -superDevMode to start a jetty server and a code server with everything set.
@author Manuel Carrasco Moñino