ai: add interpolate func and use it

Also, set the king score to 0. As we always have exactly one king on
each side it makes no difference.
Makefile: fixes
Makefile: -Og -fverbose-asm

FUCK -Og
make_tests: rework

Rearrange it to make it better. Also log all output
scripts: add mkprof.sh
make_tests: show git version in output