Revert "Generalize shift_bb() to handle double pushes"

Seems to intorduce some compiler warning as
reported by Gary. Warning seems bogus, but
revert anyhow.

No functional change.
Move queen vs. 3 minors rule to imbalance tables

Tuned with CLOP after 57k games.

Simplification: tested in no-regression mode.

Passed both STC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 17254 W: 3159 L: 3032 D: 11063

And LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 32413 W: 4967 L: 4864 D: 22582

bench: 8082049
Correctly apply previous patch

Apply the correct values from previous patch.

bench: 8082049
Shuffle movepicker score

Believed to be a speed optimization as benched
on Windows with bench realtime affinity 0x1 deleting
highest and lowest runs:

Base	Test
1549259	1608202
1538115	1583934
1543168	1556938
1536365	1554179
1533026	1582010

Signature remains unchanged and gives anywhere from 1-2% nps
boost in analysis depending on number of cores used.

No functional change.
Remove penalty for knight when few enemy pawns

Tested in standard mode at STC and no-regression
mode at LTC:

STC
LLR: 2.97 (-2.94,2.94) [-1.50,4.50]
Total: 19503 W: 3502 L: 3349 D: 12652

LTC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 67474 W: 9974 L: 9921 D: 47579

bench: 8331217
Remove RookOn7th and merge values into psqt

Tested in no-regression mode:

STC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 55678 W: 9954 L: 9892 D: 35832

LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 9238 W: 1448 L: 1311 D: 6479

bench: 7905850
Speed up picking of killers

Changing the order of the conditions gives
about 1% speed up!

No functional change.