2594 implement graceful shutdown for local zones in zoneadm
Reviewed by: Saso Kiselkov <skiselkov.ml@gmail.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Approved by: Dan McDonald <danmcd@omniti.com>
	[illumos-gate merge]

commit 3c7284bd3243d42a710edac3a15f6019b4c849be
    2594 implement graceful shutdown for local zones in zoneadm

Conflicts:
	usr/src/uts/common/sys/zone.h
	usr/src/man/man1m/zoneadm.1m
	usr/src/lib/libbrand/dtd/brand.dtd.1
	usr/src/lib/libbrand/common/mapfile-vers
	usr/src/lib/libbrand/common/libbrand.h
	usr/src/lib/libbrand/common/libbrand.c
	usr/src/cmd/zoneadmd/zoneadmd.h
	usr/src/cmd/zoneadmd/zoneadmd.c
	usr/src/cmd/zoneadmd/Makefile
	usr/src/cmd/zoneadmd/Makefile.com
	usr/src/cmd/zoneadm/zoneadm.c