(no need for a "common" subdir which contains stuff only really
referenced by one other directory)
- use Makefile.tarfloppy instead of local code to build floppies
- use .WAIT in the top-level Makefile appropriately
- install inst.fs directly from ramdisk/Makefile rather than providing
separate inst/Makefile
- Use new boot system. Bootfloppies now use ustarfs.
- Split instkernel.* directory from bootfloppy.*.
- Adjust ramdisk size.
- others.
2-floppy installation system cannot be compiled due to size bloat.
Disabled temporarily (?).