fix issue #8
update remove-cookie-from-client
misc updates
*  BUGS: add a bug
*  artanis/artanis.scm: Fixed remote visit bug. When we use "localhost" to open a http server,
                        it only open the port in 0.0.0.0 rather than a real ip. So users can only
                        visit the site with the server machine. Now we use "0.0.0.0" as the default
                        *host-addr* to fix it. Users may change the configuration as their wish.
*  artanis/config.scm: Add *host-addr*
Merge branch '2013-06-24' of gitorious.org:glow/artanis into 2013-06-24