Quiet move soft fail high bonus

Extra bonus for quiet move creating a huge soft fail high (triggered
in 21% of quiet bestmoves on a normal bench run). Pb00067 original idea
using PawnValueMg.

Passed STC:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 138207 W: 28060 L: 27295 D: 82852
http://tests.stockfishchess.org/tests/view/5b14471b0ebc5902a81689c1

Passe LTC:
LLR: 2.94 (-2.94,2.94) [0.00,5.00]
Total: 157289 W: 23200 L: 22518 D: 111571
http://tests.stockfishchess.org/tests/view/5b149dde0ebc5902a8b41c5a

bench: 4441320