Change httpd.conf default UseCanonicalName to off to make the server

more idiot proof.

Also, move UseCanonicalName to directly under ServerName to make the
connection clearer, and clean up the comments.

I removed the http://123.123.123.231/ example, because it just makes it
too tempting for people to use
ServerName http://123.23.23.23/


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93396 13f79535-47bb-0310-9956-ffa450edef68