Add Jersey2 Plugin

Here is an initial Jersey2 Plugin.  It will reload the Jersey2 Servlet Container any time a change is detected for it.  The "reload()" does not seem like an optimal solution to me since it seems to also rerun configure() on the HK2 binder I have registered with Jersey2.  Doing this reload() was the only thing I could get to work -- but this is my first time looking into Jersey2 code (and HotswapAgent).

Also included are some changes to tests to make them succeed on mac os x, and some changes to let this project import into Eclipse easily.