Connection oriented filters are now stored in the conn_rec instead of the

Connection oriented filters are now stored in the conn_rec instead of the
request_rec.  This means that a conn_rec must be supplied when calling
ap_add_filter.  The reason for this change is that we need to be able to
add the core_filter (whether or SSL or not) before we try to read the
request.  This way, if a request fails, we can actually send the error
page back to the client.  With this change, we add the core filter to the
conn_rec during the pre-connection phase.
Submitted by:	Ryan Bloom, Jeff Trawick, and Greg Ames

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86392 13f79535-47bb-0310-9956-ffa450edef68