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: 1.48.2;
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*.

fix alignment in ad.sh3

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

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: 1.39.2; 1.39.4;
Introduce sh3/sysarch.h and add SH3_SYNC_ICACHE

obsolete some GCC 4.8 files.

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.

Sort the unsorted sets lists (they should all be correctly sorted now.)

add fenv for sh

branches: 1.32.2;
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.

branches: 1.28.2; 1.28.8;
Fix last: obsolete the right machine/architecture bus.h file(s) in each
case.

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.

mark gcc-4.5/tgmath.h as gcccmds,gcc=45.

- un-obsolete a pair of files we want to remain installed (XXX i wonder
if a way to have "clean builds" not run "postinstall fix obsolete" in
the $DESTDIR so that these sorts of errors will appear as set list
errors instead of being skipped
- fix the list of headers to install for GCC 4.5, based upon the mknative
${G_EXTRA_HEADERS}. XXX move the location of G_EXTRA_HEADERS.

fix comment

branches: 1.23.12; 1.23.16;
Sync with changes introduced by merging the newlock2 branch.

obsolete db_machdep.h

Nuke va-sh.h. stdarg.h and varargs.h now use __builtin_va_*.

branches: 1.20.2;
Add byte_swap.h. HI DSL!

Add <machine/wchar_limits.h>.

reformat whitespace

Update for nathanw_sa merge.

Catch up to new pmc header files.

sync

branches: 1.14.2;
/usr/include/sh3/db_disasm.h is obsolete now.

Not all new-toolchain platforms support shared libraries (m68000 and
sh3, for example, due to defincencies in the current compiler version).

Deal with this by splitting toolchain shlibs into tc.shl, and teachking
makeflist about it.

Also, fix an old-toolchain remnant in the sh3 set lists.

Fix up set lists for three of the four sh3 ports a bit.
XXX: Still wrong because of some missing toolchain stuff (gdb),
and crt{begin,end}S.o.
XXX: mmeye didn't build for me, will investigate

Add <machine/int_fmtio.h>.

Add <machine/int_limits.h>.

Add <machine/int_const.h>.

Add <machine/int_mwgwtypes.h>.

add libbfd.a

Add <machine/int_types.h>.

Add <machine/lock.h>

Sync.

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>.

list files for sh3