Update vendor/illumos/dist to illumos-gate 13991:53e4f9da98a1

Illumos ZFS issues:
  3641 want a histogram of compressed block sizes
Update vendor/illumos/dist to illumos-gate 14004:dd91fed709a7

Illumos DTrace issues:
  3675 DTrace print() should try to resolve function pointers
  3676 dt_print_enum hardcodes a value of zero
Add missing file dt_pq.h that should have been committed in r239385

Reported by:	Pedro Giffuni <pfg@FreeBSD.org>
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 and display the IP fragment bit correctly when dealing with
the filter mode.

MFC after:	3 days.
- Add entries for alc and akoszek, alredy referenced elsewhere
- Add phk -> mux relationship, confirmed by mux@
- Add scottl -> sbruno relationship
- Move four ex-committers to the alumni section
- Sort.