Ensure that only one EOS bucket is sent down the filter stack. This is

done by adding a flag to the request_rec.  When ap_pass_bucket sees an
EOS bucket, the flag is set.  If the flag is still unset when
ap_finalize_request is called, then ap_finalize_request sends an EOS.  This
fixes the problem with chunking and CGI.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86202 13f79535-47bb-0310-9956-ffa450edef68