Merge r238587 into 20120614 tag
Update vendor-sys/illumos/dist to illumos-gate 13752:9f5f6c52ba19
(non-zfs part)

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos to illumos-gate 13753:2aba784c276b

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos to illumos-gate 13754:7231b684c18b

References:
  https://www.illumos.org/issues/2978

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos to illumos-gate 13758:23432da34147 (dtrace changes)

References:
  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/3026

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos to illumos-gate 13773:00c2a08cf1bb

References:
  https://www.illumos.org/issues/2399 (zfs manual page)

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos and vendor-sys/illumos to revision 13777:b1e53580146d

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Add zpool-features.5 vendor manual page, revision 13753:2aba784c276b

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos/dist and vendor/illumos-gate/dist
to illumos-gate revision 13782:8f78aae28a63

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos to illumos-gate 13788:0cb9e2232ae0
(dtrace changes, illumos issue #3123)
Update vendor/illumos/dist and vendor/illumos-gate/dist
to illumos-gate revision 13794:7c5e0e746b2c

Obtained from:	ssh://anonhg@hg.illumos.org/illumos-gate
Update vendor/illumos/dist to illumos-gate 13804:9f4f28db61d2
(dtrace changes only, illumos issue #3021)
Update vendor/illumos/dist and vendor/illumos-sys/dist
to illumos-gate 13805:e3a9ae14a119
(zfs changes, illumos issues #1884, #3006)
Update vendor/illumos/dist to illumos-gate 13810:4b38a0c01186
(zfs changes, illumos issue #3098)
Update vendor/illumos/dist to illumos-gate 13811:4dadf1a8e003
(zfs, illumos issue #3064)
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 13836:37bf491c434c
(illumos ZFS issues #2678, #2811, #3139, #3189, #3208)
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 13849:3468a95b27cd
(illumos ZFS issues #3145, #3212, #3258)
Update vendor/illumos/dist and vendor-sys/illumos/dist
to illumos-gate 13869:921a99998bb4
(illumos ZFS issue #3246 ZFS I/O deadman thread)

Note: illumos disables deadman logic by default on vmware and sparc
Update vendor/illumos/dist and vendor/illumos-sys/dist
to illumos-gate 13871:a9c12c2c1647
(zfs changes, illumos issues #3306, #3321)
Update vendor/illumos/dist and vendor/illumos-sys/dist
to illumos-gate 13886:e3261d03efbf
(illumos zfs issue #3349)