FELIX-4422, FELIX-4423:

- made the (re)starting and stopping of Jetty no longer asynchronous;
- the deployment/removal of web-app bundles are still done asynchronously
  as these operations can potentially be time consuming;
- all itests still work properly and some smoke tests indicate that both
  issues are resolved.



git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1567677 13f79535-47bb-0310-9956-ffa450edef68