don't free the down data pointer in join_nodes. (what was i thinking?!)
don't free the down data pointer in join_nodes. (what was i thinking?!)

do free the ancestor chain in dns_rbt_deletename

each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9