[Cake] Long-RTT broken again

[Toke Høiland-Jørgensen]

Jonathan Morton <chromatix99 at gmail.com> writes:

> While fixing this, I’m also adding configurability of the buffer limit
> and statistics of how much of the buffer was actually ever used.
> Additionally, I’m choosing a saner default for “unlimited” mode.

Cool, will give it a spin on the testbed.

Also, I'd suggest calling the tc parameter 'memlimit' rather than
'memory' to convey the fact that it's a limit and not the expected usage...

-Toke