kpk bitbase, worthless?

[brtzsnr]

So, after I replaced the endgame detection in QS with this I got about 8 Elo. It might be that the draw detection in QS was not necessary and costly (ThreeFoldRepetition was using ~5% of CPU on KPK positions).

I'm still debating whether I should or should not merge the change. IMO, 200 lines is too much for 8 Elo. I will run a gauntlet between stockfish and zurichess with and without kpk table as Evert suggested.

[1] https://bitbucket.org/brtzsnr/zurichess ... ew-default