Rename ELF2ECOFF -> MIPS_ELF2ECOFF

branches: 1.17.14; 1.17.16;
Bump size.

create the ecoff copy of the install kernel so the prom can boot it.
from PR 39915.

branches: 1.15.32;
Disable IMAGEPOSTBUILD=${DESTDIR}/usr/mdec/installboot
since it's not cross friendly.
The release should now cross-build again...

- whitespace consistency cleanup
- build (mdset/nm/strip) into ${filename} as one rule, and move ${filename}.gz
into separate rule
- rename MDSET.${filename}.nosymbols -> MDSET_NOSYMBOLS.${filename}
- rename MDSET.${filename}.post -> MDSET_POST.${filename}, and don't do
suffix handling here
- rework suffix handling:
- rename MDSET.${filename}.suffixes -> MDSET_SUFFIXES.${filename},
and change from list of suffixes to list of "suffix cmdtobuildsuffix",
where cmdtobuildsuffix is the name of the variable containing the
command to build ${filename}.${suffix} (available as "${.TARGET}").
- for each ${filename}.${suffix}, depend upon ${filename} and use
${cmdtobuildsuffix} to create the former.
- add separate ${filename}.${suffix}.gz rule
- mipsco & pmax: rename "install.gz" to "netbsd-INSTALL.gz", for
consistency and so the target to build the mdset kernel doesn't get
confused with general "install" target

rather than blocking parallel mdset builds with .WAIT, replace usage of
"netbsd.tmp" with "${.TARGET:R}" (et al)

provide common/mtree.dot (contains entry for ". type=dir ...") , and
use that rather than MTREE entry in the list, because Makefile.image
needs at least one mtree file anyway

yet another distrib overhaul:
- move guts of distrib/Makefile.inc to distrib/common/Makefile.distrib
(fixes problem caused by implicit include of ../Makefile.inc in certain
submake conditions triggered by makefiles not yet in tree)
- removed mkdir of ${RELEASEDIR}/*; rely upon "snap_pre" target of
etc/Makefile to create all the release directories
- renamed RELINSTALL to RELEASE_INSTALL
- renamed FLOPPYINSTDIR to FLOPPY_RELEASEDIR
- renamed MDSETDIR to MDSET_RELEASEDIR
- removed ITARGET
- move release target from top level to appropriate subdirectory
- ensure release target has correct depends
- replace miniroot's IMAGE_MD_POST with common/Makefile.image IMAGEPOSTBUILD
- Makefile.image: add realall: ${IMAGE}

replace _SRC_TOP_ with NETBSDSRCDIR, since the latter is the "public" version

Makefile.mdset: add ${KERNELDEPS} variable which is ${KERNELS} with
.WAIT between the items, and remove .WAIT from ${KERNELS}.
Use ${KERNELDEPS} in make dependencies.

- Rename Makefile.mdset variables:
MDEXTRA_SUFFIXES.${KERNEL} -> MDSET.${FILENAME}.suffixes
${KERNEL.${_K}}.post -> MDSET.${FILENAME}.post
This allows "default" rules for for MDSETTARGETS with FILENAMEs of "-"
by defined MDSET.-.post & MDSET.-.suffixes
- Document the above
- Use the above appropriately in various Makefiles
- Be a be quieter when building these kernels
- Add .WAIT syncs so that multiple kernels aren't built in parallel, because
the temporary filename is the same, and it also avoid hairy magic in
syncing the targets generated from MDSET.${FILENAME}.suffixes with
the master target for that ${FILENAME}

migrate to NDWO using Makefile.mdset, based on pmax/instkernel/Makefile
XXX: untested

don't set the owner or group when installing into $RELEASEDIR

Remove duplicate .include

Convert to using ${MDSETIMAGE}.

Provide a default value for $MDSETIMAGE and pull in bsd.own.mk to have
it overriden as needed for cross/-current builds.

Ensure RELEASEDIR is set before make release.

- Add "make release" target
- Create directories in release stage area before installing target

Installation bootimage for NetBSD/mipsco

Currently supports Hard Disk boot only. Mips Firmware cannot boot to
read-only media suchas CDROM drive