Remove $FreeBSD$: one-line .h pattern

Remove /^\s*\*+\s*\$FreeBSD\$.*$\n/

libc: Don't warn about RRSIG replies.

PR: 213178
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D37303

include: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Fix include/arpa/nameser_compat.h by adding T_DNAME definition.
Fixes Apache trafficserver

Submitted by: John J. Rushford <https://github.com/jrushford>
Pull Request: https://github.com/freebsd/freebsd/pull/104

Bring final version of libbind:

From
http://www.isc.org/downloads/libbind/

The libbind functions have been separated from the BIND suite as of BIND
9.6.0. Originally from older versions of BIND, they have been continually
maintained and improved but not installed by default with BIND 9. This
standard resolver library contains the same historical functions and
headers included with many Unix operating systems. In fact, most
implementations are based on the same original code.

At present, NetBSD maintains libbind code, now known as "netresolv".

Spelling fixes for include/

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Remove clause 3 from Berkeley copyrights. Add a few $FreeBSD$'s.

- Import the HEAD csup code which is the basis for the cvsmode work.

Merge BIND 9.4.1 into main chunk.

MFC after: 2 weeks

Vendor import of BIND 9.4.1

Merge BIND9 9.3.3 into main chunk.

Obtained from: ISC
MFC after: 1 week

Vendor import of BIND 9.3.3

Update the resolver in libc to BIND9's one.

Since, res_sendsigned(3) and the friends use MD5 functions, it is
hard to include them without having MD5 functions in libc. So,
res_sendsigned(3) is not merged into libc.

Since, res_update(3) in BIND9 is not binary compatible with our
res_update(3), res_update(3) is leaved as is, except some
necessary modifications.
The res_update(3) and the friends are not essential part of the
resolver. They are not defined in resolv.h but defined in
res_update.h separately in BIND9. Further, they are not called from
our tree. So, I hide them from our resolv.h, but leave them only
for binary backward compatibility (perhaps, no one calls them).

Since, struct __res_state_ext is not exposed in BIND9, I hide it
from our resolv.h. And, global variable _res_ext is removed. It
breaks binary backward compatibility. But, since it is not used from
outside of our libc, I think it is safe.

Reviewed by: arch@ (no objection)

Vendor import of BIND 9.3.2

Prepend BIG_ENDIAN, BYTE_ORDER, LITTLE_ENDIAN, and PDP_ENDIAN with an
underscore. This is the preferred form. Also fix a preprocessor
syntax error in an error-detection section.

Implement EDNS0 support, as EDNS0 support will be made mandatory for
IPv6 transport-ready resolvers/DNS servers. Need careful configuration
when enable it. (default config is not affected).
See manpage for details.

XXX visible symbol __res_opt() is added, however, it is not supposed to be
called from outside, libc minor is not bumped.

Obtained from: KAME/NetBSD

$Id$ -> $FreeBSD$

Update nameserver interface to bind-8.1.2 levels. We do not use IRS (yet?)
since it has far wider impact than hostname lookups (including passwords).
Note that this has more ugly symbol hiding and binary compatability hacks
that can go away the second we bump majors.

Obtained from: Mostly from diff against ISC bind-8.1.2 sources