Now that the boot binary is fully cross-compiled, there's no use for
the linker anymore. Theoretically, it could still be useful, but I
can't think of a real use case.

Let's take it out of the picture. If it's ever needed again, I'll
know where to find it.

It's small enough to be worth it.

and renamed it "Core words". Also, reworded the presentation.

Now that this section is so small, I think I can see a possibility
for cross-compiling Collapse OS entirely, which would be great
because we could get rid of the relinker.

This leaves space for xcomp-core which is growing.

And refreshed description.

I need RSHIFT and LSHIFT first...

I'm reserving the 100-200 range for non-bootstrapping needs.

And adjust rc2014/eeprom recipe

The way is clear for complete stage1 bootstrapping on the RC2014
target!

We can get rid of acia.z80, but not of acia.fs yet, we still need it.

I don't remove z80a.fs yet because build process needs it, but that
will change shortly.

and remove cfspack, which will not ever be used again.