**smaller than /24 allocations**.  Our default ruleset will not allow
those, even though they will be for various pieces of critical dual-stack
infrastructure to help IPv6-only systems survive.
This adds a default rule to allow those blocks.  With it, I see the
RIPE announced test blocks on our AMS-IX peers.
ARIN announced this block and policy at, enjoy
https://www.arin.net/announcements/2014/20140130.html
OK benno@, claudio@, sthen@, florian@

machinery. OpenBSD has never been not ELF on amd64, and changing this will
actually make -portable life slightly easier in the near future.

hostname.if, previously netstart tried to configure them all at once
("ifconfig if0 if1 if2 inet6 autoconf").  From Delan Azabani, ok phessler@

ok deraadt@

wants to use, well.... copy them there.
ok guenther

By default, MSVC's stdlib.h defines min(), so we need to spell out something
less common to avoid picking it up.
ok deraadt@ beck@ miod@

so that we can provide asm labels for the memcpy/memset/__stack_smash_handler
calls that it generates ab initio.  Eliminate direct #includes of it.  Make
sure it's a dependency of all objects (unnecessary for asm, but close enough).
ok deraadt@

jontly with jsing@

ok jsing@

which results in tame() code placements being much more recognizeable.
tame() can be moved to unistd.h and does not need cpp symbols to turn the
bits on and off.  The resulting API is a bit unexpected, but simplifies the
mapping to enabling bits in the kernel substantially.
vague ok's from various including guenther doug semarie

ports scan by sthen@

From Michael McConville

to eliminate duplicate copies of the tables and get direct access internally
ok kettenis@ deraadt@

Move internal declarations from <db.h> to libc's hidden/db.h
ok kettenis@

_cat* in the process.
ok kettenis@

for upcoming CompCert port.
Final version of the diff is from kettenis@ with input from jsg@ and tedu@.
ok kettenis@, jsg@, "I agree" millert@

wrapper .h files and asm labels to let internal calls resolve directly and
not be overridable or use the PLT.  Then, apply that framework to most of
the functions in stdio.h, string.h, err.h, and wchar.h.  Delete the
should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here.
tests clean on i386, amd64, sparc64, powerpc, and mips64
naming feedback from kettenis@ and millert@
ok kettenis@

through all existing pseudo-tty devices in /dev.

- use more descriptive variable name
Changes for make_keys():
- use variables for file paths
- key -> keys in message
- take into account the return codes of isakmpd private *and* public
key generation
OK krw@ halex@

symbols that are not longer exported.  (This improves the generated code.)
ok deraadt@

and __dorand48() and __rand48_deterministic
ok deraadt@

Delete exect(2); it wasn't portable across archs and nothing used it.
ports test build by naddy@
ok deraadt@ kettenis@

requested by several
discussed with deraadt@

- initialize _ban variable
- style
OK halex@

In wsconsctl.conf configuration variables can contain doublequotes
which are removed by the shell if wsconsctl is used interactively.
In scripts, without using eval, these doublequotes are preserved
and the wsconsctl command complains about "illegal character in
input".
Found by and OK jmc@
With feedback from and OK krw@, halex@

malloc/calloc/realloc* returns.

but these are the only two lines in any disktab that do it this way.
ok miod@

ok jca@ aja@

flags in the disklabel. These flags were discarded in 2006.
Remove documentation for and instances of 'ty'. Add instances of
'dt' that were missing. Use 'floppy' as the value of 'dt' for all
floppies and 'rdroot' for all boot images/miniroots.
Add 'rdroot' to dktypenames and an associated #define DTYPE_RDROOT,
since 'dt' values are parsed by matching entries in dktypenames[].
Slightly tweaked part of larger cleanup diff previously ok deraadt@.

/usr/tmp references.
Diff from Craig Skinner via tech@ plus a /usr/tmp removal from me in the
updatedb script.
ok millert@.

than < for the comparison.  Otherwise, if we don't do enough work
in the loop to advance the clock (for instance if the network is
down) we may end up calling poll() multiple times with no timeout,
racking up CPU time for no real reason.  OK bcook@

with r1.18. 'rm' and 'il' were removed from getdiskbyname() in 2009
with r1.19. The associated disklabel fields were recycled for other
purposes.
Another 'harmless' part of the larger disklabel cleanup diff.
ok deraadt@ as part of that larger diff.

- no need to check for non-empty *.conf files, stripcom handles that now
- pipe stripcom output directly to while-read-loop
- quote the argument to the *ctl commands
- no need to double shutup mixerctl, -q already means quiet
OK krw@, halex@

General changes:
- apply a similar 'style' as used in the installer scripts
- improve comments to be more to the point, remove where code is obvious
- document usage of functions if they have arguments
- rename variables where it improves readability
- replace really old-school shell code with more contemporary idioms
Changes to stripcom():
- skip empty files (eleminates tests for this before calling stripcom)
- remove {} around the while-loop, feed file directly
- instead of continue if empty and then print, print only if non-empty
- use the safer "print -r --" instead of plain "echo"
- quote "$_line" on output to prevent globbing
Changes to update_limit():
- use {,-cur,-max} instead of "" -cur -max
- eleminate if-block with reverse test and continue
OK halex@ krw@