Merge r1392345, r1392346 from trunk:

Bring XML output up to snuff for balancer-manager

and allow the xml param
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1420135 13f79535-47bb-0310-9956-ffa450edef68