Add logic to the default_handler to enable script delivery to script

processors located in the output filter stack. This is on by default,
but will change "soon" to off -- the processors will then need to
enable it when they are installed into the filter chain.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@97065 13f79535-47bb-0310-9956-ffa450edef68