Apply patch 04 from jboynes to improve cookie handling.
Prevent V0 cookies using '=' in cookie names
I've checked back though the archives and I can find no record of a user asking for this feature. Also, given the known behaviour of browsers it is unlikely to have worked any way. On that basis, this should be safe.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1596574 13f79535-47bb-0310-9956-ffa450edef68