6222496 zoneadm install does not check for lofs availability

[gerald.jeli...@sun.com]

Author: gjelinek
Repository: /hg/onnv/onnv-gate
Revision: e5f4749e678fafdaca668e2d84a2a48ea57d536b
Log message:
6222496 zoneadm install does not check for lofs availability

Files:
        update: usr/src/cmd/zoneadm/zoneadm.c