fix cookie handling
fix cookie handling

also fix typo on "$CONF"

adamdruppe/rubycas-server,DiegoSalazar/ROR-RubyCAS-Server,jay3126/ruby_cas_server,rubycas/rubycas-server,identification-io/rubycas-server,adamdruppe/rubycas-server,Windermere/rubycas-server,chowells79/rubycas-server,jay3126/ruby_cas_server,Windermere/rubycas-server,acsellers/cas,geo767/rubycas-server,Windermere/rubycas-server,infoman/rubycas-server,infoman/rubycas-server,intinno/ruby-cas-server,chowells79/rubycas-server,identification-io/rubycas-server,adamdruppe/rubycas-server,geo767/rubycas-server,infoman/rubycas-server,DiegoSalazar/ROR-RubyCAS-Server,geo767/rubycas-server,identification-io/rubycas-server,rubycas/rubycas-server,intinno/ruby-cas-server,chowells79/rubycas-server,rubycas/rubycas-server,acsellers/cas