new configuration option for mod_rewrite to set cookies.

configuration is like the following

RewriteRule (.*) - [CO=<cookiename>:$1:<domain>:<expiry in minutes>]

Submitted by:	Brian Degenhardt <bmd@mp3.com>
Reviewed by:	Ian Holsman


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95840 13f79535-47bb-0310-9956-ffa450edef68