Provide more infrastructure support for host-node-maps for more flexible domain handling
- add optional -cookie_domain parameter to the following functions
ad_user_login
ad_user_logout
sec_generate_session_id_cookie
auth::issue_login (wrapper for ad_user_login)
if not specified, the functions are full backward compatible
- add optional parameter -host_node_id to auth::authenticate
which refers to the node_id in the host-node-map
- pass host_node_id from from/to register pages
TODO:
1) probably, sec_generate_session_id_cookie picks up the wrong
session_id via [ad_conn session_id]
2) check interaction with CookieDomain (probably, we need
must not pass host_node_id wheren CookieDomain is non-empty)