Overhauled ap_server_root_relative, so that it now changes any path
  to canonical form through apr.  Also assures that a change to the
  ServerRoot through a -C option takes effect before locating the
  httpd.conf file.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90571 13f79535-47bb-0310-9956-ffa450edef68