Add some debugging logic to perchild. This is almost working now, we just

aren't popping out of apr_poll if there is data on the Unix Domain Socket.

Once that is fixed, this MPM _should_ work again.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96103 13f79535-47bb-0310-9956-ffa450edef68