Per Matthew Ahrens, version 5000 should not be exposed to user and there is
a problem with my first revision, namely, specifying -d -o feature@...=enable
will still bail out with:
'feature@' and 'version' properties cannot be specified together.
Because zpool create -o version=5000 will not likely be supported by other
ZFS implementations (including ours on -CURRENT and 9-STABLE), remove the
hack that make that work. Users who want feature flags support can still
do an explicit 'zpool upgrade' after creating a pool.
git-svn-id: svn://svn.freebsd.org/base/stable/8@249100
ccf9f872-aa2e-dd11-9fc8-
001c23d0bc1f