MFC r311925,r311968,r311969,r312008:

r311925:

Import testcase updates with code contributed back to NetBSD

This also (inadvertently) contains an update to
contrib/netbsd-tests/lib/libc/sys/t_wait.c (new testcases).

In collaboration with: christos@NetBSD.org

r311968:

Fix lib/libc/sys/access_test after r311925

sys/param.h needs to be #included in order for __FreeBSD_version to be checked

r311969:

Remove __HAVE_LONG_DOUBLE #define from t_strtod.c and place it in Makefile

This is to enable support in other testcases

Inspired by lib/msun/tests/Makefile .

r312008:

Upgrade NetBSD tests to 01.11.2017_23.20 snapshot

This contains some new testcases in /usr/tests/...:

- .../lib/libc
- .../lib/libthr
- .../lib/msun
- .../sys/kern

Tested on: amd64, i386

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 r274578,r274580:

r274578:

Add reachover Makefiles for contrib/netbsd-tests/lib/libpthread as
lib/libthr/tests

A variant of this code has been tested on amd64/i386 for some time by
EMC/Isilon on 10-STABLE/11-CURRENT. It builds on other architectures, but the
code will remain off until it's proven it works on virtual hardware or real
hardware on other architectures

Original work by: pho
Sponsored by: EMC / Isilon Storage Division

r274580:

Add reachover Makefiles for contrib/netbsd-tests/lib/librt

A variant of this code has been tested on amd64/i386 for some time by
EMC/Isilon on 10-STABLE/11-CURRENT. It builds on other architectures, but the
code will remain off until it's proven it works on virtual hardware or real
hardware on other architectures

Sponsored by: EMC / Isilon Storage Division

Add reachover Makefiles for contrib/netbsd-tests/lib/libpthread as
lib/libthr/tests

A variant of this code has been tested on amd64/i386 for some time by
EMC/Isilon on 10-STABLE/11-CURRENT. It builds on other architectures, but the
code will remain off until it's proven it works on virtual hardware or real
hardware on other architectures

Original work by: pho
Sponsored by: EMC / Isilon Storage Division