Less noisy this way

To update LATEST offset more easily. Will be useful for recipes.

Modest first step

This allows us to get rid of the zasm.sh wrapper.

The order in which cfspack includes its file depend on the platform. To have
tests that reliably pass, test.cfs has to be committed in.

It's no longer required to use `gmake` under OpenBSD and shell scripts
no longer require bash.

Let go of that "meta os" thing. it's not as meta as I made it sound
like. It's a kernel.

Will be much much easier to tests new core routines without having to
re-create their context first.

Also, extract parse.asm from core.asm