[Cake] Cake doesn't build against net-next

[Jonathan Morton]

> On 30 Jul, 2015, at 01:48, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
> 
> Including flow_dissector.h instead doesn't work either:

Right - I haven’t really looked at the new API there yet.  It’s rather important though, so I’m downloading net-next to one of the machines I plan to take to Slovenia.  I’ll have lots of time to poke around it on the way there.

- Jonathan Morton