Replace forall loops with do loops.
Replace forall loops with do loops.

This is kind of dumb since the intention of forall was to make loops with
independent data faster, but aparanently it was too hard for any compilers to
get right and in practice is at best as fast as a do loop, but usually slower.

This makes the blue puzzle go from .02s to .007s on my Pentium D.

dcampbell24/cubes,dcampbell24/cubes,dcampbell24/cubes,dcampbell24/cubes,dcampbell24/cubes