Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14089:520f3adc5d46:

Illumos ZFS issues:
  3894 zfs should not allow snapshot of inconsistent dataset
Update vendor/illumos/dist to illumos-gate 14096:12d3631da129:

Illumos ZFS issues:
  3909 "zfs send -D" does not work
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14120:e9e346400fef:

Illumos ZFS issues:
  3949 ztest fault injection should avoid resilvering devices
  3950 ztest: deadman fires when we're doing a scan
  3951 ztest hang when running dedup test
  3952 ztest: ztest_reguid test and ztest_fault_inject don't place nice together
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14121:6f5ac5d649af:

Illumos ZFS issues:
  3955 ztest failure: assertion refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14122:1e57939bc87d:

Illumos ZFS issues:
  3956 ::vdev -r should work with pipelines
  3957 ztest should update the cachefile before killing itself
  3958 multiple scans can lead to partial resilvering
  3959 ddt entries are not always resilvered
  3960 dsl_scan can skip over dedup-ed blocks if
       physical birth != logical birth
  3961 freed gang blocks are not resilvered and can cause pool to suspend
  3962 ztest should print out zfs debug buffer before exiting
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14137:f7523d207d74:

Illumos ZFS issues:
  3996 want a libzfs_core API to rollback to latest snapshot
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 14143:42d090a37218:

Illumos DTrace issues:
  3089 want ::typedef
  3094 libctf should support removing a dynamic type
  3095 libctf does not validate arrays correctly
  3096 libctf does not validate function types correctly
Update vendor/illumos/dist to 14148:fe28bd725808:

Illumos DTrace issues:
  4005 libctf can't deal with extended sections
Update vendor/illumos/dist to 14152:46f5fb0b0d36:

Illumos DTrace issues:
  4061 libzfs: memory leak in iter_dependents_cb()
Update vendor/illumos/dist and vendor-sys/illumos/dist
to 14159:dc75c925d8aa:

Illumos ZFS issues:
  2932 support crash dumps to raidz, etc. pools
Update vendor/illumos/dist to 14160:734110b9882f:

Illumos ZFS issues:
  1765 assert triggered in libzfs_import.c trying to import pool
       name beginning with a number
Update vendor/illumos/dist and vendor-sys/illumos/dist
to 14164:dceb17481b99:

Illumos ZFS issues:
  4045 zfs write throttle & i/o scheduler performance work
Merge upstream r743: caught_signal should be static.
Damn autoprops!
3933 contract adoption can race

illumos/illumos-gate@a81df0a5d715363cc1841810a87818dfa95675c0

Note we now reference illumos commits in the github repository as the
mercurial mirror seems to be neglected.

For connectivity:
r255255 referenced 14164:dceb17481b99 which is
illumos/illumos-gate@69962b5647e4a8b9b14998733b765925381b727e

r255258 referenced 14176:15e9457c12ec which is
illumos/illumos-gate@cf746768a898264fa491791a8252865e5338dc67
4101 metaslab_debug should allow for fine-grained control

4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4104 ::spa_space no longer works
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab

Revision illumos/illumos-gate@0713e232b7712cd27d99e1e935ebb8d5de61c57d
4168 ztest assertion failure in dbuf_undirty

4169 verbatim import causes zdb to segfa
4170 zhack leaves pool in ACTIVE state

illumos/illumos-gate@7fdd916c474ea52896c671bbe7b56ba34a1ca132
4171 clean up spa_feature_*() interfaces

4172 implement extensible_dataset feature for use by other zpool
features

illumos/illumos-gate@2acef22db7808606888f8f92715629ff3ba555b9
4248 dtrace(1M) should never create DOF with empty probes section

4249 Only probes from the first DTrace object file will be included

illumos/illumos-gate@54a20ab41aadcb81c53e72fc65886e964e9add59
4251 libdtrace leaks open file handles

4250 libdtrace should use "F" specifier on fopen()

illumos/illumos-gate@93ed8d0d4b068b95d0bb50d57bb854df462a8485