Also translate Destination headers when ProxyPassReverse'd

* modules\proxy\mod_proxy_http.c

  (process_proxy_header): reverse map Destination header.

  NOTE: This is some darn nasty looking code...


* modules\proxy\ajp_header.c

  (ajp_unmarshal_response): reverse map Destination header.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@151246 13f79535-47bb-0310-9956-ffa450edef68