MFC r305358,r305449,r305451,r306367,r306397,r309474:

This also contains a merge of ^/projects/netbsd-tests-update-12@r304035 .
This change never hit ^/head because bin/cat's behavior was changed (on ^/head)
to match NetBSD.

PR: 210607

r305358:

Update contrib/netbsd-tests with new content from NetBSD

This updates the snapshot from 09/30/2014 to 08/11/2016

This brings in a number of new testcases from upstream, most
notably:

- bin/cat
- lib/libc
- lib/msun
- lib/libthr
- usr.bin/sort

lib/libc/tests/stdio/open_memstream_test.c was moved to
lib/libc/tests/stdio/open_memstream2_test.c to accomodate
the new open_memstream test from NetBSD.

Tested on: amd64 (VMware fusion VM; various bare metal platforms); i386 (VMware fusion VM); make tinderbox

r305449:

Install h_db to unbreak some of the lib/libc/db testcases after
r305358

r305451:

Fix lib/libc/rpc test assumptions added in r305358

- Require root in the tcp/udp subtests (it's needed on FreeBSD when
registering services).
- Skip the tests if service registration fails.

r306367 (by br):

Allow up to 6 arguments only on MIPS.

r306397 (by br):

Use right piece of code for FreeBSD.

r309474:

Don't build :strvis_locale if VIS_NOLOCALE is undefined

The copy of contrib/libc-vis on ^/stable/10 doesn't contain all of the features
in the ^/stable/11 // ^/head version, including VIS_NOLOCALE. The risk is lower
in conditionally running the test instead of backporting the newer version of
libc-vis

MFC r289172,r290254:

r289172:

Refactor the test/ Makefiles after recent changes to bsd.test.mk (r289158) and
netbsd-tests.test.mk (r289151)

- Eliminate explicit OBJTOP/SRCTOP setting
- Convert all ad hoc NetBSD test integration over to netbsd-tests.test.mk
- Remove unnecessary TESTSDIR setting
- Use SRCTOP where possible for clarity

r290254:

Remove unused variable (SRCDIR)

MFC r290537,r290540,r290560,r290856,r290871,r291839:

r290537:

Integrate tools/regression/lib/libc/stdio into the FreeBSD test suite
as lib/libc/tests/stdio

- Fix some whitespace
- Convert the testcases to ATF
- Convert "/dev/null" to _PATH_DEVNULL

Sponsored by: EMC / Isilon Storage Division

r290540:

printfloat_test and scanfloat_test need symbols from msun; these are automatically
provided on amd64, but not i386. Add libm to DPADD/LDADD to unbreak the i386
tinderbox

Pointyhat to: ngie
Sponsored by: EMC / Isilon Storage Division

r290560:

Convert print_positional_test over to ATF

Somehow missed in r290537

Sponsored by: EMC / Isilon Storage Division

r290856 (by bapt):

also skip the definition of ':fopen_regular' to avoid the build to fail due to
unused variables defined by ATF macros

r290871:

Disable -Wformat with scanfloat_test when compiling with gcc to avoid a
"use of assignment suppression and length modifier together in scanf format"
warning on line 90 (it's intentional)

Sponsored by: EMC / Isilon Storage Division

r291839:

Initialize errno to 0 in the nul testcase before testing it

For some odd reason stable/10 requires this, otherwise it always fails
the errno == 0 check on line 196.

Sponsored by: EMC / Isilon Storage Division

MFC r267004,r274592:

r267004 (by gahr):

- Use strlen instead of hardcoding a number
- Terminate a sentence with a period

Approved by: cognet

r274592 (by ngie):

Convert tools/regression/lib/libc/stdio/test-fmemopen into an ATF testcase and
rename as lib/libc/stdio/fmemopen2_test

Sponsored by: EMC / Isilon Storage Division

MFC r267004,r274592:

r267004 (by gahr):

- Use strlen instead of hardcoding a number
- Terminate a sentence with a period

Approved by: cognet

r274592 (by ngie):

Convert tools/regression/lib/libc/stdio/test-fmemopen into an ATF testcase and
rename as lib/libc/stdio/fmemopen2_test

Sponsored by: EMC / Isilon Storage Division