history table tweak
if a bound is crossed, only half the table for the side to the move
signature = 8881930
Revert "history table tweak"

This reverts commit c0b700a92866410d8b5e9d1b41a7b0264da5fd6f.
reduce history bonus when there are pending threats

10000 games in 10"+0.1"
2431-2354-5215 [50.4%] p-value=86.7%

signature = 8744152