4914 zfs on-disk bookmark structure should be named *_phys_t
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Saso Kiselkov <skiselkov.ml@gmail.com>
Approved by: Robert Mustacchi <rm@joyent.com>
	[illumos-gate merge]

commit 7802d7bf98dec568dadf72286893b1fe5abd8602
    4914 zfs on-disk bookmark structure should be named *_phys_t

Conflicts:
	usr/src/uts/common/fs/zfs/zvol.c (copyrights)