patch to not cache responses containing Set-Cookie header

Submitted by:	Bill Hilf <bhilf@etoys.com>
Reviewed by:	Chuck Murcko


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@85662 13f79535-47bb-0310-9956-ffa450edef68