Add in a weighted byte count of all traffic (in and out) as

an alternative balancing method. We do not "adjust" the
byte count wrt scheme or method, simply by factoring
in the lbfactor value.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@126304 13f79535-47bb-0310-9956-ffa450edef68