core: shorten the wait time in ap_lingering_close() if the

"short-lingering-close" connection note is set.

mod_reqtimeout: Instead of setting c->aborted, use the "short-lingering-close"
connection note to shut down the connection quickly while still giving the
client a chance to receive the error message.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@923418 13f79535-47bb-0310-9956-ffa450edef68