Hack headers to work semi-properly. This is a hack that will need to be

fixed, but it is good enough for now.  The idea is that headers shouldn't
flow through the BUFF anymore.  Now, we have a header filter that is
called at the end of the request-filter chain.  This filter writes the
headers directly to the connection filters.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86687 13f79535-47bb-0310-9956-ffa450edef68