348 ZFS should handle DKIOCGMEDIAINFOEXT failure
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: George Wilson <george.wilson@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>
3918 "pargs -l" dies on incomplete core dumps
3919 mdb/pmap should show unresolved map names on core dumps
3920 executable mapping in core dump misreported when file isn't found
3921 Pfindexec() finds wrong binary, wreaking havoc
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
3939 parent rn_lock being held across calls to rc_hold
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
	[illumos-gate merge]

commit a29160b0f5f650ae34e2273cacdd3eff15c62fba
    3939 parent rn_lock being held across calls to rc_hold
commit 8f68126c6dc4f2178929233f0c7ccce877e973ca
    3918 "pargs -l" dies on incomplete core dumps
    3919 mdb/pmap should show unresolved map names on core dumps
    3920 executable mapping in core dump misreported when file isn't found
    3921 Pfindexec() finds wrong binary, wreaking havoc
commit a5b577712a34346841d970e0827b4920ace408af
    348 ZFS should handle DKIOCGMEDIAINFOEXT failure