Reword Order section to make 3-pass design clearer.

        Add table showing results of match combinations.
        Fix some tenses.
        Fix case of CENTER & IP Address.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@479897 13f79535-47bb-0310-9956-ffa450edef68