Optiboot special

I was sort-of hoping to get out of the "business" of providing .hex and .lst files from the repository.
Once you get out of "standard" boards, the names/files don't contain enough information about the target, and the diffs resulting from edits are annoyingly large even for minor (or zero) changes in the actual code.

But with the arg "LED_START_FLASHES=0"
I get this output. DLED_START_FLASHES=3' ?

Looking into it. I didn't actually test the builds under windows :frowning: