MFC r327888, r327972, r327973:
Add "jid" and "jailname" variables to DTrace.

MFC r326878:
Mark uctf/err.user64mode.ksh as EXFAIL for now.

MFC r326096:
Annotate pragma/err.invalidlibdep.ksh as EXFAIL.

MFC r326061, r326063:
DTrace test fixups.

MFC r307400, r307401:
DTrace test fixes.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Fix a typo that snuck in with r283024, and remove the EXFAIL annotation from
a test which now passes as a result of that change.

Add infrastructure to integrate the DTrace test suite with Kyua.

For each test category, we generate a script containing ATF test cases for
the tests under that category. Each test case simply runs dtest.pl (the
upstream test harness) with the corresponding test files. The exclude.sh
script is used to record info about tests which should be skipped or are
expected to fail; it is used to generate atf_skip and atf_expect_fail calls.
The genmakefiles.sh script can be used to regenerate the test makefiles when
new tests are brought it from upstream.

The test suite is currently not connected to the build as there is a small
number of lingering test issues which still need to be worked out. In the
meantime however, the test suite can be easily built and installed
manually from cddl/usr.sbin/dtrace/tests.

Reviewed by: ngie
Sponsored by: EMC / Isilon Storage Division