Merge r1328133 from trunk:

PR 53104 - %{abc}C truncates cookies whose values contain '='

Submitted by: gregames
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1359690 13f79535-47bb-0310-9956-ffa450edef68