MFC r289195:

Integrate the tests from lib/libarchive, usr.bin/cpio, and usr.bin/tar in to
the FreeBSD test suite

functional_test.sh was ported from bin/sh/tests/functional_test.sh, as a
small wrapper around libarchive_test, bsdcpio_test, and bsdtar_test provided
by upstream.

A handful of testcases in lib/libarchive/tests have been disabled as they
were failing when run with kyua test (see BROKEN_TESTS in
lib/libarchive/tests/Makefile)

As a sidenote: this removes the check/test targets from the Makefiles as they
don't match the pattern used in the rest of the FreeBSD test suite.

Sponsored by: EMC / Isilon Storage Division

Conflicts:
lib/libarchive/test
usr.bin/cpio/test

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Don't panic when we read an empty ACL from ZFS. Apparently this may happen
with filesystems created under MacOS X ZFS port. This is kind of filesystem
corruption (we don't allow for setting empty ACLs), so make acl_get_file(3)
and related syscalls fail with EINVAL in that case. In theory, we could
return empty ACL to userland, but I'm afraid this would break some code.

MFC after: 3 days

Change license to more bori^Wadul^Wcanonical.

Submitted by: rwatson@

MFp4 changes neccessary for NFSv4 ACLs support in ZFS. This is mostly
about removing a few #ifdefs and providing compatibility wrappers and
VOP implementations to get and set an ACL; ZFS does ACL enforcement all
by itself.

Note that the VOPs are ifdefed out for now, so this change should be
a no-op.

Reviewed by: pjd