[Cake] openwrt build with latest cake and other qdiscs

[Alan Jenkins]

Hi

First comment on testing cake:

The usage in the wiki assumes you already know how to change qdiscs on 
the fly.  Here's what happened when I tried the command from the wiki:

root at mortar:~# tc qdisc add dev pppoe-wan cake
RTNETLINK answers: Invalid argument

Here's what doesn't get an error, maybe the wiki should show it instead:

root at mortar:~# tc qdisc replace dev pppoe-wan root cake

root at mortar:~# tc qdisc show dev pppoe-wan
qdisc cake 8004: root refcnt 2 unlimited diffserv4 flows

Regards
Alan