Limit the amount of texture scaling done per frame, to reduce stutters

Scaling causes really bad stutters in some games on some hardware.

This should also reduce the impact of pathological cases like the first
boss of FF Type-0 to be more bearable.
Comment out the deferred scaling logs.
Clear STATUS_TO_SCALE at a better place
Merge pull request #6310 from hrydgard/deferred-scaling

Limit the amount of texture scaling done per frame to reduce stutters