* util_filter.h (ap_filter_flush): clarify that this function has

    nothing to do with FLUSH buckets. It is simply a cover function
    for ap_pass_brigade for use with the apr_brigade_* writing
    functions.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@100646 13f79535-47bb-0310-9956-ffa450edef68