fixes for bugs 1205 1274 1204 1203 1113. Change encrypted mount/unmounting and merge with pre-existing zfs method. Change SMF bypass to be expandable

[anthony.scarp...@sun.com]

Author: Anthony Scarpino <Anthony.Scarpino at Sun.COM>
Repository: /hg/zfs-crypto/gate
Latest revision: 5d4706f6dc6614d4527ff40522f9e02ca934b2c2
Total changesets: 1
Log message:
fixes for bugs 1205 1274 1204 1203 1113.  Change encrypted mount/unmounting and 
merge with pre-existing zfs method. Change SMF bypass to be expandable

Files:
        update: usr/src/cmd/zfs/Makefile
        update: usr/src/cmd/zfs/zfs_main.c
        update: usr/src/cmd/zpool/zpool_main.c
        update: usr/src/lib/libzfs/common/libzfs.h
        update: usr/src/lib/libzfs/common/libzfs_crypto.c
        update: usr/src/lib/libzfs/common/libzfs_dataset.c
        update: usr/src/lib/libzfs/common/libzfs_mount.c
        update: usr/src/lib/libzfs/common/mapfile-vers