MFC r326061, r326063:
DTrace test fixups.

MFC r307400, r307401:
DTrace test fixes.

MFC r309698, r309699, r309700:
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

Use the -shared option to create a shared library.

MFC after: 1 week

Remove a leading tab that causes a make(1) error when running the test.

MFC after: 1 week

Only kill sleep processes that were forked from the test script.

MFC after: 1 week

Avoid hard-coding a path to ksh in scripts that are executed directly by
the test harness. This is a problem in many of the *.ksh test scripts as
well, but those scripts are executed using a shell whose path is specified
in dtest.pl, so there's no need to modify them.

MFC after: 1 week

Use syscall::exit instead of the nonexistent syscall::rexit.

MFC after: 1 week

Include required headers in DTrace test programs.

MFC after: 1 week

Use the correct field when reading the PID out of a struct proc.

MFC after: 1 week

Implement a workaround to allow this test program to be compiled with clang.
It seems that if a pragma is used to define a weak alias for a local
function, the pragma must appear after the function is defined.

PR: 193056
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

DTrace: Revert r249367

The following change from illumos brought caused DTrace to
pause in an interactive environment:

3026 libdtrace should set LD_NOLAZYLOAD=1 to help the pid provider

This was not detected during testing because it doesn't
affect scripts.

We shouldn't be changing the environment, especially since the
LD_NOLAZYLOAD option doesn't apply to our (GNU) ld.
Unfortunately the change from upstream was made in such a way
that it is very difficult to separate this change from the
others so, at least for now, it's better to just revert
everything.

Reference:
https://www.illumos.org/issues/3026

Reported by: Navdeep Parhar and Mark Johnston

DTrace: option for time-ordered output

Merge changes from illumos:

3021 option for time-ordered output from dtrace(1M)
3022 DTrace: keys should not affect the sort order when sorting by value
3023 it should be possible to dereference dynamic variables
3024 D integer narrowing needs some work
3025 register leak in D code generation
3026 libdtrace should set LD_NOLAZYLOAD=1 to help the pid provider

This brings yet another feature implemented in upstream DTrace.
A complete description is available here:
http://dtrace.org/blogs/ahl/2012/07/28/my-new-dtrace-favorite/

This change bumps the DT_VERS_* number to 1.9.1 in
accordance to what is done in illumos.

This change was somewhat complicated because upstream is mixed many
changes in an individual commit and some of the tests don't really
apply to us.

There are also appear to be differences in timestamping with Solaris
so we had to workaround some assertions making sure no regression
happened.

Special thanks to Fabian Keil for changes and testing.

Illumos Revisions: 13758:23432da34147

Reference:
https://www.illumos.org/issues/3021
https://www.illumos.org/issues/3022
https://www.illumos.org/issues/3023
https://www.illumos.org/issues/3024
https://www.illumos.org/issues/3025
https://www.illumos.org/issues/1694

Tested by: Fabian Keil
Obtained from: Illumos
MFC after: 1 months

Set SVN text/plain property for some shell scripts that
happen to have a .exe extension.

While here fix the shebang of a shell script that
was looking for /bin/bash.

Reviewed by: gnn
Approved by: jhb (mentor)
MFC after: 2 weeks

Port most of the DTrace tests to FreeBSD.

Sponsored by: The FreeBSD Foundation

MFV OpenSolaris DTrace userland bits.

This commit was generated by cvs2svn to compensate for changes in r178476,
which included commits to RCS files with non-trunk default branches.