Allow cookies set by mod_rewrite to contain ':' by accepting

';' as an alternate separator.  PR47241. 

Submitted By: <bugzilla schermesser com>, 
Committed By:  covener




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1693963 13f79535-47bb-0310-9956-ffa450edef68