Moves the DocumentRoot declaration down to immediately above the

<Directory $document_root> block, so that they are clearly related to
one another, rather than having to have the comment referring back up 20
lines.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1080291 13f79535-47bb-0310-9956-ffa450edef68