FreeBSD: Use the httpready accept filter instead of dataready on

newer levels of the OS.

Submitted by: Paul Querna <chip force-elite.com>
Reviewed by:  Jeff Trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@102495 13f79535-47bb-0310-9956-ffa450edef68