This one fixes "router xxx" node commands in vtysh. Don't get "unknown
command" error when entering "passive-interface eth0" command while
ospfd and ospf6d running etc.
http://hasso.linux.ee/zebra/ht-ifrmap-14042003.patch
Allows to extract.pl to pickup "route-map xxx in/out dev" commands for vtysh
(ripngd). As lib/if_rmap.[c|h] are used in ripngd only, I moved them to the
ripngd/ directory.