FELIX-3054: Incorrect PathInfo & ServletPath:

- the ServletRequest given to the HttpContext was not wrapped, causing it
  to provide incorrect PathInfo & ServletPath information. A small addition
  to the solution for FELIX-2774 provides a proper fix. Added itest to 
  verify this behaviour.



git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1567569 13f79535-47bb-0310-9956-ffa450edef68