Add load balancer support to the scoreboard in preparation for

load balancing support in mod_proxy.
PR:
Obtained from:
Submitted by:	Mladen Turk <mturk@apache.org>
Reviewed by:


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@104404 13f79535-47bb-0310-9956-ffa450edef68