[ApacheDS] integrating jetty

Hello guys,

       I would like to start the work on integrating jetty in ADS (DIRSERVER-1262).

       As Emmanuel mentioned in the comments, the main purpose is

       "it's about adding Jetty into ADS to accept Http request without having to depend on another web server.
        This is quite interesting if you want to expose some administrative information using some kind of web app,
        or even better, implement a DSML gateway inside the server."

       IMO it is better to keep this feature as detachable as possible from the ADS.(jetty will be started only if the
       required dependencies are present during startup and required config is set)

       Another question, is jetty the only option to embed? as Emmanuel pointed out on IRC, can we use tomcat or asyncweb
       instead (or support all three!)

       Will there be a usecase where a user embedding ADS also requires to embed jetty?

       thoughts?

       P.S :- will post initial configuration thoughts in another mail

Kiran Ayyagari