4112 sd should apply sd_io_time tunable to non-optical devices
4113 sd.conf tunable enhancements
Reviewed by: Garrett D'Amore <garrett@dey-sys.com>
Approved by: Albert Lee <trisk@nexenta.com>
3357 Desire -Q to make zlogin "quieter"
Reviewed by: David Höppner <0xffea@gmail.com>
Reviewed by: Andy Stormont <AStormont@racktopsystems.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
	[illumos-gate merge]

commit c2589d1319a6171334739fb4b10ddc8317ec486b
    3357 Desire -Q to make zlogin "quieter"