When developing from a Collapse OS environment, it's necessary to
be able to download blocks from it.

Running a ROM on an everdrive is one thing, but running a ROM
directly is another: my hacked up sega.bin didn't have a proper
checksum, so the ROM didn't run.

This new tool transforms a binary into a properly-headered ROM.

Has been tested on an actual SMS.

Read the contents of forth.bin at runtime. This allows us to get
rid of the bin2c tooling.

not actually tested yet...

Big bootstrapping change which greatly reduces the role of the modern
operating system in the bootstrapping process.

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

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

It seems that my little "@.c" trick only worked in BSD make...

ref #80

In C this time. Python/Perl code is barely terser than C for these little
tools. Why bother with interpreted?