This change actually gets beos shutting down and restarting!

It's not perfect, but it's a long way towards it.  The problem turned out
to be simple, we weren't resetting the poll selections before we went into
poll for the second time.  Not sure if this means our poll impl. using
select is broken or not?

It also changes us to use the new UDP in APR.  With these changes and some
restructuring in the worker_thread and I'm done for tonight!


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88555 13f79535-47bb-0310-9956-ffa450edef68