Allow reverse-proxy to be set via explicit handler

git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1573626 13f79535-47bb-0310-9956-ffa450edef68
typo


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1573630 13f79535-47bb-0310-9956-ffa450edef68
xforms


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1573631 13f79535-47bb-0310-9956-ffa450edef68
update transformation


git-svn-id: http://svn.apache.org/repos/asf/httpd/httpd/trunk@1573755 13f79535-47bb-0310-9956-ffa450edef68