MFC r259921,259950:

Provide the manual page for aio_fsync(2).
MFC r260636:

Fix bsnmpd remote denial of service vulnerability.

Reported by:	dinoex
Submitted by:	harti
Security:	FreeBSD-SA-14:01.bsnmpd
Security:	CVE-2014-1452
MFC r260637:

Disable 'monitor' feature in ntpd by default.

Security:	FreeBSD-SA-14:02.ntpd
Approved by:	so
On stable/8 and stable/9, disable hardware random number generators
by default.  This is a direct commit to stable/ branches because
HEAD and stable/10 have superior implementation of random device.

Approved by:	so
MFC r259951 (kib):

Do not coalesce stack entry. Pass MAP_STACK_GROWS_DOWN and
MAP_STACK_GROWS_UP flags to vm_map_insert() from vm_map_stack()
Fix  BIND remote denial of service vulnerability.

Security:	FreeBSD-SA-14:04.bind
Security:	CVE-2014-0591
MFC r253821,254753,256259

MFV r253783: 3834 incremental replication of 'holey' file systems is
slow

MFV r254747:4047 panic from dbuf_free_range() from dmu_free_object()
while doing zfs receive

MFV r255257: 4082 zfs receive gets EFBIG from dmu_tx_hold_free()
MFC r258351: fsx: new option to disable msync(MS_SYNC) after each write
MFC r258352: fsx: add an option to randomly call msync(MS_INVALIDATE)
MFC r258638,258642: expose zfs_flags as debug.zfs_flags r/w tunable and sysctl

Sponsored by:	HybridCluster
MFC r258647: zfsboottest: properly specify a library dependency
MFC r258628: opensolaris taskq: some cosmetic changes
MFC r258630: 734 taskq_dispatch_prealloc() desired
MFC r258743: drop ZUT_OBJ
MFC r258630: 734 taskq_dispatch_prealloc() desired
MFC r258631: MFV r247578

3581 spa_zio_taskq[ZIO_TYPE_FREE][ZIO_TASKQ_ISSUE]->tq_lock is piping hot
MFC r255437: MFV r247844 (illumos-gate 13975:ef6409bc370f)

Note that a different kind of cv_timedwait_hires shim is provided in
this branch because cv_timedwait_sbt is not available for better
emulation.

Sponsored by:	HybridCluster [merge]
MFC r248426: Fix typo in sysctl description

MFC slacker:	mm
MFC r251478: MFV r251474: 3137 L2ARC compression

MFC slacker:	delphij
MFC r254074: MFV r254070: Merge vendor bugfix for ZFS test suite that
triggers false positives

MFC slacker:	delphij