Scale down endgames with pawns on one or two adjacent files
Original version of shane's patch
Revert "Check for an available slave early on"

This reverts commit ce1c260ea97c14eea996d0a2638f4876ccbc412b.
Merge pull request #8 from glinscott/revert_ce1c260

Revert "Check for an available slave early on"
A bit more cleanup
Merge pull request #9 from glinscott/pawnspan

Scale down endgames with pawns on one or two adjacent files

Passed STC
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 16081 W: 2745 L: 2604 D: 10732

Passed LTC
LLR: 2.95 (-2.94,2.94) [1.00,6.00]
Total: 123832 W: 17292 L: 16584 D: 89956

128k games to measure ELO at 15+0.05:
ELO: 2.07 +-1.1 (95%) LOS: 100.0%
Total: 128000 W: 21632 L: 20869 D: 85499

New bench: 8028792
Pack 3 TT entries in 32 bytes cluster

Idea from Ron Britvich

Code reworked by Marco Costalba and Joona Kiiski

Bench: 8095369

Resolves #3
Resolves #10