Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.

Undo previous lwp.h change.

Split __lwp_getprivate_fast and __lwp_*tcb from mcontext.h into a separate
lwp.h file.

distrib/sets/lists: Add a blank comment line between RCS id and body.

This serves as a buffer between RCS id changes and other changes to
the set lists, in an attempt to reduce the pain of merge conflicts
around mass set list changes.

No functional change intended.

branches: 1.55.2;
distrib/lists/sets/comp: Add gcc=12 obsolete entries for gcc-10/*.h.

mark all previously gcc=9 files as obsolete.

also mark a bunch of obsolete gcc headers as "comp-obsolete" "set".

should fix a 'postinstall fix obsolete' issue reported by uwe@.

various updates for GCC 10 support. remove dead gcc7/8 support
and properly mark obsolete files in gcc9/gcc10.

testing on amd64 and shark for GCC 9, and many platforms for GCC 10,
(though not arm yet.)

mostly support GCC 9 builds. some what tested with GCC 9 but
tested to not break GCC 8 builds for x86, arm*, vax, and sparc*.

gcc 8 set lists updates. i don't appear to have broken gcc 7 builds
but i only tested a couple of them.

add basic gcc-7 support in sets lists and filesystem. mips gained
a header. assumes it's otherwise mostly the same as gcc-7.

- mark gcc=5 files obsolete
- make includes always available, not only when gcccmds
- mark files obsolete consistently

Retire compat_ibcs2, as discussed on tech-kern@. FreeBSD did the same
recently.

Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.

branches: 1.46.2; 1.46.4;
updates for GCC 6.4: add gcc-6 specific headers, combine some
all-gcc files, bump the shlib versions on new libs.

convert HAVE_GCC handling to modern GCC release numbering:
- HAVE_GCC=5 is now the default (vs. HAVE_GCC=53 we've been using for
GCC 5.4 and GCC 5.5.)
- remove some more GCC 4.8 code. we don't support GCC 4 here.
- adjust set lists to gcc=5 from gcc=53.

add some basic HAVE_GCC=6 handling (totally unused so far.)

Tag cleanup: if the last column contains 'obsolete', the one before should too.

branches: 1.43.2;
set fixes for GCC 5.3.

(only arm is tested so far, but there's a pattern i can see :-)

now that we only support gcc 4.8, make all the gcc tags just "gcc".
this should help with next-gcc, when we can add back gcc=48 and
gcc=5x tags, as necessary.

obsolete and clean up gcc=3 (3.3), gcc=4 (4.1), and gcc=45 (4.5) sets.

add support for GCC 4.8 sets.

Sort entries in strcmp order.

Add a new "debug" set that gets built when ${MKDEBUG} is set. On evbarm:
-rw-r--r-- 1 root src 35806068 Jan 16 10:47 base.tgz
-rw-r--r-- 1 root src 57374069 Jan 16 10:48 comp.tgz
-rw-r--r-- 1 root src 101286193 Jan 16 10:49 debug.tgz
...
This allows always building the debugging code and libraries but not
installing it (although now it is placed in the default sets if ${MKDEBUG}
is set

branches: 1.37.6;
add gcc-4.5/tgmath.h

branches: 1.36.2;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

make MKPIC=no builds work on i368, shark, vax, pmax, sgimips, sparc,
maybe all mips and all arm as well.

branches: 1.34.2;
Add a bunch of .debug entries, determined by inspecting the equivalent
comp lists.
Inspired by PR 39370

branches: 1.33.12; 1.33.16;
Sync with changes introduced by merging the newlock2 branch.

White space nits.

obsolete db_machdep.h

_G_config.h is obsolete these days.

Add <machine/wchar_limits.h>.

reformat whitespace

Significant overhaul of how the sets are used:

* Add an optional third field to the sets file which is a list of
comma separated keywords that control if the line is printed.
Currently supported keywords
kerberos4 ${MKKERBEROS4} != no
kerberos ${MKKERBEROS} != no
lint ${MKLINT} != no
obsolete ${obsolete} != 0.
In this case, non obsolete files are not printed.
(This will allow future support for builds with variables such as
MKHESIOD and MKYP set to "no".)

* Use sh(1)'s getopts where appropriate, and otherwise cleanup the
various scripts.

* Move defaults for sets.subr from sets.defaults into sets.subr.
Move replicated code for determining stuff such as shlibs type
from various scripts into sets.subr.

* Merge the obsolete.*, krb.*, krb4.* and lint.* into the appropriate
main lists with the relevant third field keyword(s).

Add <vax/vaxfp.h>.

Back out change that made libpthread per-platform. It is *intentional*
that the build fails on platforms which do not yet have libpthread support.

Not all ports/archs have pthread support. So split this up by the proper arch's
for determining which ones get the libraries. Tested on dreamcast, macppc
and i386 builds to cover non builds, ad and md mods

Update for nathanw_sa merge.

Catch up to new pmc header files.

Add an assortment of vax-specific header files:

bus.h
coff_machdep.h
leds.h
qdioctl.h
qdreg.h
qduser.h
qevent.h

Move a.out c++rt0.o and scrt0.o to obsolete.

Add <machine/int_fmtio.h>.

Add <machine/int_limits.h>.

Add <machine/int_const.h>.

Add <machine/int_mwgwtypes.h>.

Add <machine/int_types.h>.

add some missing files.

Add <machine/lock.h>

Add "machine_machdep.h".

Add package names. Later tonight or tomorrow AM, I will post a writeup of
this to tech-{pkg,install}. In short, the pkg names in (new) second
field will be used by the build process under basesrc/src/dist/pkg to
generate PLISTs. The package divisions here may be two finely or coarsely
grained, although I think they're a happy medium -- I will give more
detail/justification in the writeup.

Add <machine/math.h>.

Add a NetBSD RCS tag to each distrib list file.

branches: 1.8.2;
Update for bswap.h and byte_swap.h includes.

Set cleanup:
- make all ports egcs; move stuff to mi and shl.*
- fix m68k-based comp sets to use usr/include/$MACHINE (as
usr/include/machine is now a symlink); add directory entries where missing

More egcs updates: MD-split objc headers, and add egcs compilers and
static libraries where applicable.

MD-split the libstdc++ binaries and includes to reflect the state of
egcs/non-egcs default compiler on each platform.

1) move lint libs to the mi list -- all architectures will be building
lint libs.
2) on some md.* files, change "/machine/" to "/$ARCH/" to reflect the
new way we do /usr/include/machine include files.

Note that some archs probably need md lint libs added, and some
machines probably still need their /usr/include/machine support
frobbed, but it is a good start.

Move c++rt0 from mi to md files, except for 68K where it goes into ad.68k.

branches: 1.2.2;
MD vax distribution files.

branches: 1.1.2;
file md.vax was initially added on branch netbsd-1-1.