Add in the new CookiePrefix and CookieFormat directives that allow

for the tracking cookie to have an arbitrary string prepended or
to choose a normal or "compact" cookie.

PR:
Obtained from: Fast Search & Transfer (contributed)
Submitted by:	P�l L�berg <pallo@initio.no>
Reviewed by:	Rasmus, Jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@97962 13f79535-47bb-0310-9956-ffa450edef68