Remove IOLs from Apache. They are no longer necessary, now that we have

Remove IOLs from Apache.  They are no longer necessary, now that we have
filtering beginning to work.  There is a hack that has been repeated
through this patch, we morph a pipe into a socket, and put the socket
into the BUFF.  Everytime we do that, we are working with a pipe from
a CGI, and we should be creating a pipe bucket and passing that bucket
back.  Because we don't actually have pipe buckets yet, we are using this
hack.  When we get pipe buckets, this will be fixed.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86136 13f79535-47bb-0310-9956-ffa450edef68