mod_log_config: Add format options for %p so that the actual local

or remote port can be logged.  

PR:  43415
Submitted by: Adam Hasselbalch Hansen <ahh@one.com>
Extensively commented on and/or modified by Ruediger Pluem and Jeff Trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@579425 13f79535-47bb-0310-9956-ffa450edef68