PR port-mvme68k/56146

Build wrtvid as tools.

branches: 1.27.2;
more -fcommon for boot programs.

branches: 1.26.28;
centralize vers.c building for standalone programs.

branches: 1.25.6; 1.25.10; 1.25.14;
Add empty LIBCRTI= as LIBCRT0 to build sa programs without installed DESTDIR.

XXX: probabry we should have bsd.saprog.mk or something.

Explicitly link SRT0.o (Standalone RunTime startup code) first.

This is my fault on changes to make mvme68k bootloaders use MI libsa:
http://mail-index.netbsd.org/source-changes/2011/01/02/msg016539.html
MVME PROM requires raw binaries (by objcopy -O binary) so we have to
make sure the entry point is located at the first address of the binaries.

The problem (6.1 netboot fails with an illegal instruction message)
is reported by Andrew Gillham on port-mvme68k@:
http://mail-index.netbsd.org/port-mvme68k/2013/09/17/msg000082.html
Note mvme68k bootloadres in netbsd-6 still have another bug triggered
by gcc-4.5.

Should be pulled up to netbsd-6 branches.

Build boot loaders without unwind tables.

branches: 1.22.4; 1.22.10; 1.22.14; 1.22.16; 1.22.18; 1.22.24;
Drop bootprog_maker (formerly enabled by -M) and bootprog_date (formerly
disabled by -D) from the output of newvers_stand.sh. Change -D to the
inverted logic, so that it adds the date to bootprog_rev in ().

Change all platforms accordingly. -D is added if MKREPRO is not yes and
wasn't present before. Platforms that didn't use -D don't depend on
MKREPRO now either.

branches: 1.21.2; 1.21.4;
Switch mvme68k standalone problams to using MI libsa and libkern
for maintainablility. Also bump version for note.

Compile test only, but no functional changes.

branches: 1.20.4;
Use <bsd.klinks.mk> to create machine and ${MACHINE_CPU} symlinks.

Create machine and ${MACHINE_CPU} symlinks properly and
remove unnecessary dependencies so that parallel build works.

Fix for install/40961: The RAMDISK kernel has grown significantly
since bootst was written. Grab 3MB of the kernel image from tape
in hackprom_diskrd() instead of 2MB.

Bump bootst version on account of the above fix.

While here, use -Os instead of -O2 to compile mvme68k stand code.

Remove obsolete LIBSA_USE_MEMCPY and LIBSA_USE_MEMSET.
They were removed from <lib/libsa/stand.h> on December 2007.

branches: 1.16.2;
Make sure machine and ${MACHINE_ARCH} symlinks are always created.

Add some make variables to suppress errors on build without DESTDIR.

branches: 1.14.24; 1.14.68; 1.14.74; 1.14.78; 1.14.86; 1.14.88;
Move some definitions from CFLAGS to CPPFLAGS so that SRT0.S can
include <m68k/asm.h> properly.

merge ktrace-lwp.

branches: 1.12.16;
Use ${HOST_SH} instead of `sh'.

If necessary, pull in <bsd.sys.mk> to get the definition of HOST_SH;
Makefiles that pull in one of (most of) <bsd.*.mk> will get this anyway.

Add -ffreestanding

branches: 1.10.2;
Move the -D__daddr_t from libsa/Makefile to Makefile.booters so
the bootloaders get to benefit from it, not just libsa.

Use ${PRINTOBJDIR} rather that rolling our own.
This prevents parallel builds passing "--- xxx ---" (which make prints to
indicate it's building target "xxx") to ld.

branches: 1.8.8;
MKfoo=no -> NOfoo

branches: 1.7.6;
Descend into wrtvid in all but the install pass.

branches: 1.6.4;
Missed this one in yesterday's bootloader commits:
Change BUGCRT from bugcrt.o to bugstart.o.

Clean up the build process to ensure libsa/libbug are built
before linking the bootloaders.

Support booting an ELF kernel, plus numerous tweaks due to
the gas.new/ELF transition.

branches: 1.3.2;
Add support for the m68060-based machines: MVME-172 and MVME-177.
CPU support taken from a combination of NetBSD/amiga and NetBSD/x68k.

At this time, MVME-172 works but MVME-177 is untested. Since the '177
is otherwise identical to the MVME-167, this should *just work*.

Really make this work for `dependall'. Also strip bootst.bug before
running it through wrtvid.

cleanup Makefiles, put common stuff to Makefile.booters, ditch unnecessary
stuff
make this all compile with -Wall -Wno-main -Wmissing-prototypes
-Wstrict-prototypes -Werror , also compilable on 1.4.1
label itself as NetBSD/mvme68k instead of "BSD" in bootblock message
move bugcrt.c to libbug, remove bugcrt directory (bugcrt is still built
and used separately to rest of libbug)
convert sboot to use ordinary mvme68 libsa, instead of copying needed
stuff in libc_sa.c
convert to use version info generated by sys/conf/newvers_stand.sh
instead of previous version.c files, add necessary 'version' files
put chiptotime() to separate libsa file (used also by sboot/clock.c)

Thanks to Steve Woodford for help with this. Note that -current build
might be hosed by this change, will be addressed by Steve shortly.