Add FreeBSD directory layout

PR: 21100
Submitted by:   info@orangexl.com (Sander Holthaus)
Reviewed by:    Brian Pane, Erik Abele, Astrid Ke�ler


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@100560 13f79535-47bb-0310-9956-ffa450edef68