pfGridmath listed every exact cols x rows grid per bar size; the only
live use was seeding the layout dropdown, which a divisor loop now does.
Everything else that read it was unreachable: every layout option is a
"cols x rows" string, so ResolveBarLayout's BarLayoutFormfactor lookup
never matched, and the actionbar module resets a stored layout that
isn't one before BarLayoutSize/BarButtonAnchor run, so their fallbacks
never fired. BarLayoutFormfactor and env/tables.lua go with it.