BIF-6809

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The sieve example programs in testsource run, such as they are.

still trying to make the sieve stuff work.
rs_sieve_bif.fs at least works.
Using the image sieveplay.dsk.

sieve stuff for testing, original files and the working disk image.

buggy bif_img, but it works if you're careful and don't mind things sliding a line or two.

Flaky arguments, but SCREEN to variable lines is working for variable widths and blocks, I think.

extracts okay, formats okay, no insertion into images, still must use dd to build images

32col.c in junkbox has become bif-img.c, a tool for exhanging contents of disks with text files.

Description of cross_v, improving the README, etc.

cross_v Cross assembled with lwtools also works. Images are slightly different.

line endings will now work for diff, etc.

Worried about what git rm does

preparing to change the line endings under cross_v

command line tools for working with edtasm source

Being too careful with backup files

A NUL in NULL

Adding a bit of necessary information in the README.TXT.

a little more information

Baseline, with the license notices in README.TXT and BIFDOC.TXT.
Not yet tested in any real sense.

binary from the last commit

Adding a theoretically unnecessary NUL character to a symbol table entry.

Barely tested. bifsource.dsk/BIF6809.BIN EXEC &H1300 -- Should be able to compile some things.

Approximating the state it was in when I mothballed in around 1993.
Some of the files have problems.