This commit adds support for purely name-based virtual hosting that

does not require any IP addresses in httpd.conf and which disregards
the local IP address of any connections. This will be particularly
appreciated by people running little servers on machines with
dynamically configured IP addresses, and by people wishing to use
identical httpd.conf files on all the machines in a load-balanced
cluster.

The syntax is:
        NameVirtualHost *
        <VirtualHost *>
                ServerName my.friend.has.a.silly.vanitydomain.org
                DocumentRoot /usr/local/apache/docs1
        </VirtualHost>
        <VirtualHost *>
                ServerName but.easier.to.spell.than.my.vanitydomain.org
                DocumentRoot /usr/local/apache/docs2
        </VirtualHost>

The implementation is a straightforward extension of what is there
already although the patch is made somewhat larger by the need to
avoid duplicate code for normal and wildcarded NameVirtualHosts.

PR: 5595, 4455

[ported from 1.3.13]


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86208 13f79535-47bb-0310-9956-ffa450edef68