Get the proxy module compiling again. This is a hack to get past the

Get the proxy module compiling again.  This is a hack to get past the
current compiler errors.  Basically, the core now puts the socket
in the conn_rec->conn_config vector.  The proxy grabs that socket and
uses it where it used to use the client_socket field from the conn_rec.
Long-term, all of the direct socket communication needs to be removed,
and this should go through a filter stack.  Short-term, this gets the
proxy working again.

I have tested http and connect, but I haven't looked at the FTP proxy,
although it does compile now.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91952 13f79535-47bb-0310-9956-ffa450edef68