Having gone through and expnaded out the hook macro it seemed a waste

to throw it away, so here it is added as comments for people who are
in the same place I was trying to debug what was going on inside a hook.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89496 13f79535-47bb-0310-9956-ffa450edef68