Initial googlemock/googletest integration into the build/FreeBSD test suite

This initial integration takes googlemock/googletest release 1.8.1, integrates
the library, tests, and sample unit tests i

Initial googlemock/googletest integration into the build/FreeBSD test suite

This initial integration takes googlemock/googletest release 1.8.1, integrates
the library, tests, and sample unit tests into the build.

googlemock/googletest's inclusion is optionally available via `MK_GOOGLETEST`.
`MK_GOOGLETEST` is dependent on `MK_TESTS` and is enabled by default when
built with a C++11 capable toolchain.

Google tests can be specified via the `GTESTS` variable, which, in comparison
with the other test drivers, is more simplified/streamlined, as Googletest only
supports C++ tests; not raw C or shell tests (C tests can be written in C++
using the standard embedding methods).

No dependent libraries are assumed for the tests. One must specify `gmock`,
`gmock_main`, `gtest`, or `gtest_main`, via `LIBADD` for the program.

More information about googlemock and googletest can be found on the
Googletest [project page](https://github.com/google/googletest), and the
[GoogleMock](https://github.com/google/googletest/blob/v1.8.x/googlemock/docs/Documentation.md)
and
[GoogleTest](https://github.com/google/googletest/tree/v1.8.x/googletest/docs)
docs.

These tests are originally integrated into the build as plain driver tests, but
will be natively integrated into Kyua in a later version.

Known issues/Errata:
* [WhenDynamicCastToTest.AmbiguousCast fails on FreeBSD](https://github.com/google/googletest/issues/2172)

Reviewed by: asomers
Approved by: emaste (mentor)
MFC after: 2 months
Differential Revision: https://reviews.freebsd.org/D19551

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MFhead@r344786

Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
the upstream release_80 branch r355313 (effectively, 8.0.0 rc3). The
release will follow very soon, but no more functional cha

Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
the upstream release_80 branch r355313 (effectively, 8.0.0 rc3). The
release will follow very soon, but no more functional changes are
expected.

Release notes for llvm, clang and lld 8.0.0 will soon be available here:
<https://releases.llvm.org/8.0.0/docs/ReleaseNotes.html>
<https://releases.llvm.org/8.0.0/tools/clang/docs/ReleaseNotes.html>
<https://releases.llvm.org/8.0.0/tools/lld/docs/ReleaseNotes.html>

PR: 236062
Relnotes: yes
MFC after: 1 month

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Fix the pathing for the header files

It needs to be prefixed under /usr/include/private; not /usr/include

Update version numbers, and regenerate config headers for llvm, clang,
lld and lldb. Update ObsoleteFiles.inc and OptionalObsoleteFiles.inc.

Remove iBCS2, part1: userspace

iBCS2 was disconnected from the build in 2015 (see r291419)

bsdconfig parts submitted by dteske.

Reviewed by: kib (previous version)
Sponsored by: The FreeBSD Founda

Remove iBCS2, part1: userspace

iBCS2 was disconnected from the build in 2015 (see r291419)

bsdconfig parts submitted by dteske.

Reviewed by: kib (previous version)
Sponsored by: The FreeBSD Foundation

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Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
the upstream release_70 branch r348686 (effectively, 7.0.1 rc3). The
release will follow very soon, but no more functional cha

Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
the upstream release_70 branch r348686 (effectively, 7.0.1 rc3). The
release will follow very soon, but no more functional changes are
expected.

Release notes for llvm, clang and lld 7.0.0 are available here:
<http://releases.llvm.org/7.0.0/docs/ReleaseNotes.html>
<http://releases.llvm.org/7.0.0/tools/clang/docs/ReleaseNotes.html>
<http://releases.llvm.org/7.0.0/tools/lld/docs/ReleaseNotes.html>

PR: 230240, 230355
Relnotes: yes
MFC after: 2 months

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Merge ^/head r340918 through r341763.

Add ga_IE.UTF-8 locale.

PR: 228587
Submitted by: Micil <micheal.maclochlainn@oegaillimh.ie> (LC_TIME)
Reviewed by: bapt
Approved by: kib (mentor, implicit)
MFC after: 3 days
Differential revision:

Add ga_IE.UTF-8 locale.

PR: 228587
Submitted by: Micil <micheal.maclochlainn@oegaillimh.ie> (LC_TIME)
Reviewed by: bapt
Approved by: kib (mentor, implicit)
MFC after: 3 days
Differential revision: https://reviews.freebsd.org/D17997

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Merge llvm, clang, lld, lldb, compiler-rt and libc++ release_70 branch
r346007 (effectively 7.0.1 rc2), resolve conflicts, and bump version
numbers.

PR: 230240, 230355

Update llvm/clang version numbers in various files.

Create an aarch64 subdir under man4, now that we have aarch64 manpages.

Reported by: Mark Millard

More follow-up to r335799 (llvm/clang 6.0.1 update), where I forgot to
update mtree files, ObsoleteFiles and a number of other paths. Sorry
about all the breakage.

Pointy hat to: me
MFC after: 2 we

More follow-up to r335799 (llvm/clang 6.0.1 update), where I forgot to
update mtree files, ObsoleteFiles and a number of other paths. Sorry
about all the breakage.

Pointy hat to: me
MFC after: 2 weeks
X-MFC-With: r335799

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Introduce dwatch(1) as a tool for making DTrace more useful

Reviewed by: markj, gnn, bdrewery (earlier version)
Relnotes: yes
Sponsored by: Smule, Inc.
Differential Revision: https://reviews.freebsd

Introduce dwatch(1) as a tool for making DTrace more useful

Reviewed by: markj, gnn, bdrewery (earlier version)
Relnotes: yes
Sponsored by: Smule, Inc.
Differential Revision: https://reviews.freebsd.org/D10006

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Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
6.0.0 (branches/release_60 r321788). Upstream has branched for the
6.0.0 release, which should be in about 6 weeks. Please re

Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
6.0.0 (branches/release_60 r321788). Upstream has branched for the
6.0.0 release, which should be in about 6 weeks. Please report bugs and
regressions, so we can get them into the release.

Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11
support to build; see UPDATING for more information.

MFC after: 3 months

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Update clang versioned dir in mtree files.

Upgrade our copies of clang, llvm, lldb and libc++ to r319231 from the
upstream release_50 branch. This corresponds to 5.0.1 rc2.

MFC after: 2 weeks

Merge ^/head r325842 through r325998.

Remove xlint(1).

xlint is currently a fossil. We have much more useful and alive tools
to do now what xlint did twenty years ago.

I did not cleared some stuff which makes lint operational, in
sys/

Remove xlint(1).

xlint is currently a fossil. We have much more useful and alive tools
to do now what xlint did twenty years ago.

I did not cleared some stuff which makes lint operational, in
sys/x86/include and sys/sys, but I might do it as followup. The
x86/include/ucontext.h and _types.h hacks made to please lint was the
main reason for my initial proposal to classify xlint as obsolete and
to remove it.

Also I do not intend to clear sccs ids.

Reviewed by: bapt, brooks, emaste, jhb, pfg
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D13015

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Merge ^/head r323559 through r325504.

MFhead@r324075

Remove unneeded locales and alias man directories

In base, locales (and encoding) specific directories are not used
by any tool. Just remove them.

While here also remove the cat page directory for

Remove unneeded locales and alias man directories

In base, locales (and encoding) specific directories are not used
by any tool. Just remove them.

While here also remove the cat page directory for openssl

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Remove the cat pages directory now that catman(1) is gone

MFhead@r320180

Merge ^/head r319973 through 321382.