Grab trunk r888310:

 Core HTTP: disable keepalive when the Client has sent
     Expect: 100-continue
 but we respond directly with a non-100 response.  Keepalive here led
 to data from clients continuing being treated as a new request.

PR: 47087
Submitted by: niq
Reviewed by: wrowe, sf, trawick


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1098104 13f79535-47bb-0310-9956-ffa450edef68