bp of r1.143: fixed mean and median calculations, changed where time values...

bp of r1.143: fixed mean and median calculations, changed where time values for start and connect for ka


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@104634 13f79535-47bb-0310-9956-ffa450edef68