jetty 6.1.17.1

A gem packaging of the {Jetty Web Server}[http://www.mortbay.org/jetty/] for JRuby: * Provides jetty, jetty-util, servlet-api, and jetty-rewrite-handler jars. * A Jetty::ServerFactory for simple programmatic server setup in ruby. * A set of Jetty::TestServlets containing a SnoopServlet and PerfTestServlet (implemented in Java). * A jetty-service bin script for easy testing from the command line. Note that JSP support is provided separately in the companion jetty-jsp[http://rjack.rubyforge.org/jetty-jsp/] gem.