Replace boot_ustar with xxboot_ustarfs.
The old boot_ustar had many hard coding and was small(<1KB).
The new xxboot_ustarfs is a part of integrated larger(<8KB) xxboot.
We had to maintain three similar but not the same bootloaders, but
now we have two!

FLOPPYPAD=1 for padding floppies.
On XM6i (emulator), the floppy format type of plain image is
decided by filesize, so it makes easy to use the image on XM6i.

branches: 1.12.32; 1.12.56; 1.12.58; 1.12.62;
Consistently use "netbsd-XXXXX" instead of "netbsd.XXXXX".

Correct CLEANFILES.

branches: 1.10.2;
Put secondary boot loader correctly.
patch from Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>

- reorganise to be more consistent with other distrib/* directories
(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

Rewrite with MI distrib. based on Minoura-san's work.
it makes x68k port cross buildable.

Overhaul installation system.
- 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 (?).

Change the kernel name from netbsdsi(.gz) to netbsd(.gz).

branches: 1.5.2;
Include <bsd.kernobj.mk> and <bsd.own.mk> for ${KERNOBJDIR}.

use bsd.kernobj.mk to tell us KERNOBJDIR for compiled kernels.

branches: 1.3.2;
Look at KERNOBJDIR.

Give up support of 4MB RAM machines for standard sysinst-based installer.
Restricted small installer must be used on those machines.

New install floppy/kernel based on sysinst.