Import bmake-20250308

Intersting/relevant changes since bmake-20250125

ChangeLog since bmake-20250125

2025-03-08 Simon J Gerraty <sjg@beast.crufty.net>

• bsd.after-import.mk: by default generate makefiles

closer to BSD style.

• VERSION (_MAKE_VERSION): 20250308

Merge with NetBSD make, pick up
o clean up comments and code for parallel mode
o job.c: avoid SIGPIPE for children, call Job_Wait befor abort.

2025-02-27 Simon J Gerraty <sjg@beast.crufty.net>

• VERSION (_MAKE_VERSION): 20250225

Merge with NetBSD make, pick up
o job.c: reliably remove targets on interrupt,
by passing signal to children first.

mk/ChangeLog since bmake-20250125

2025-03-14 Simon J Gerraty <sjg@beast.crufty.net>

• install-mk (MK_VERSION): 20250314

• meta.stage.mk: StageFiles --subdir: preserve the dir part of

each file under $dest

2025-03-12 Simon J Gerraty <sjg@beast.crufty.net>

• meta.autodep.mk: do a better job of handling MAKESYSPATH in

GENDIRDEPS_ENV. If we have MAKE_VERSION >= 20230123 we can just
use .SYSPATH, otherwise it is a bit more complicated.