dtrace(1): add -d flag to dump D script post-dt_sugar

By specifying the -d flag, libdtrace will dump the D script after it has
applied syntactical sugar transformations (e.g if/else). This is useful
for both understanding what dt_sugar does, as well as debugging it.

Reviewed by: markj
Approved by: markj (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D38732

dtrace: fix an out of bound read and a NULL pointer increment

In dt_cc.c when the provider is an empty string, accessing
strlen(pdp->dtpd_provider) - 1 will result in a pdp->dtpd_provider[-1]
access.

Similarly, in dt_ident.c, if p2 is a NULL pointer, doing a p2++ on it is
undefined behaviour.

Reviewed by: markj
MFC after: 1 week
Sponsored by: Google
Differential Revision: https://reviews.freebsd.org/D30778

Fix an off-by-two in the llquantize() action parameter validation.

The aggregation created by llquantize() partitions values into buckets; the
lower bound of the bucket containing the largest values is b^{m+1}, where
b and m are the second and fourth parameters to the action, respectively.
Bucket bounds are stored in a 64-bit integer, and so the llquantize()
validation checks need to verify that b^{m+1} fits in 64 bits. However, it
was only verifying that b^{m-1} fits in 64 bits, so certain parameter
combinations could trigger assertion failures in libdtrace.

PR: 219451
MFC after: 1 week

Remove the DTrace printt and typeref actions.

These are FreeBSD-specific and were added in r178576 to provide the ability
to pretty-print instances of compound types. However, the print action has
long since been augmented to provide this functionality with a simpler
interface.

Discussed with: gnn
Differential Revision: https://reviews.freebsd.org/D8478

Mechanically convert cddl sun #ifdef's to illumos

Since the upstream for cddl code is now illumos not sun, mechanically
convert all sun #ifdef's to illumos #ifdef's which have been used in all
newer code for some time.

Also do a manual pass to correct the use if #ifdef comments as per style(9)
as well as few uses of #if defined(__FreeBSD__) vs #ifndef illumos.

MFC after: 1 month
Sponsored by: Multiplay

MFV r258381:

4251 libdtrace leaks open file handles

Illumos commit: 93ed8d0d4b068b95d0bb50d57bb854df462a8485
(partial)
Reference:
https://www.illumos.org/issues/4251

Discussed with: Robert Mustacchi
Obtained from: Illumos
MFC after: 1 week

DTrace: re-apply r249426 now that the underlying issues have been solved.

Merge change from illumos:

3519 DTrace fails to resolve const types from fbt
3520 dtrace internal error -- token type 316 is not a valid D
compilation token
3521 clean up dtrace unit tests

Illumos Revision: e98f46c

Reference:
https://www.illumos.org/issues/3519
https://www.illumos.org/issues/3520
https://www.illumos.org/issues/3521

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

DTrace: Revert r249426

This change actually depends on r249367 which had to be reverted

Pointy Hat: pfg

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

Bring llquantize support into Dtrace.

Bryan Cantrill implemented the equivalent of semi-log graph
paper for Dtrace so llquantize will use one logarithmic and
one linear scale.

Special thanks to Mark Peek for providing fix to an
assertion and to Fabian Keill for testing the port.

Illumos Revision: 13355:15b74a2a9a9d

Reference:
https://www.illumos/issues/905

Obtained from: Illumos
Tested by: Fabian Keill, mp
MFC after: 4 days

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

* Handle the different ioctl design.
* Add a couple of FreeBSD action extensions.