The final vhost revamp? Maybe? Who knows. This is yet another vhost

revamp.  This adds the NameVirtualHost directive which explicitly indicates
which ip:port pairs are to be used for name-vhosts.  It strictly enforces
these pools of name-vhosts, so that you can only make requests against the
hosts in the pool associated with the ip:port connected to.  It ignores
the port portion of the Host: header, trusting the socket port instead.

All vhost matching functions have been moved into http_vhost.[ch] to make
things a little easier to understand.

Reviewed by:	Roy Fielding, Martin Kraemer


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79345 13f79535-47bb-0310-9956-ffa450edef68