Backport of the Apache 2.3 module that replaces the apparent client
remote IP address and hostname for the request with the IP address
list presented by a proxy or load balancer via the request headers.
WWW: http://httpd.apache.org/docs/2.3/mod/mod_remoteip.html
PR: ports/146509
Submitted by: Jim Riggs <ports at christianserving.org>