Backports: r1057372

Submitted by: trawick
comment on where multiple headers with same name get merged

(some strict Cookie parsers can't handle what happens later,
but that is not our fault)



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x-merge-http-strict@1775695 13f79535-47bb-0310-9956-ffa450edef68