[Cake] cake/tc - removal of atm/ptm/ethernet specific overhead keywords

[Jonathan Morton]

> On 2 Jun, 2016, at 21:53, moeller0 <moeller0 at gmx.de> wrote:
> 
> “conservative”-keyword needs special care in documentation as it is the only keyword that compounds per-packet-overhead and specific framing

Not true.  All of the ATM-specific encapsulation keywords - of which there are ten others - also force ATM compensation on.  This is obvious in the code.

 - Jonathan Morton