FELIX-4421 - Upgrade to Jetty 8:

- bumped the embedded Jetty version to latest Jetty 8 version;
- bumped minor versions of all bundles to indicate that this
  version no longer is compatible with Java 5;
- added simple integration test to verify the basic functionality
  provided by the HTTP service.



git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1565705 13f79535-47bb-0310-9956-ffa450edef68