Build world and zfs related commits

[Matthias Gamsjager]

Hello,

Do I need to build world when a new ZFS related commit took place or
is a build kernel enough?

eg svn commit: r208334:
Modified:
 stable/8/cddl/contrib/opensolaris/cmd/zdb/zdb.c
 stable/8/cddl/contrib/opensolaris/cmd/ztest/ztest.c
 stable/8/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
 stable/8/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h
 stable/8/cddl/contrib/opensolaris/lib/libzpool/common/taskq.c
 stable/8/sys/cddl/boot/zfs/zfsimpl.h
 stable/8/sys/cddl/compat/opensolaris/sys/sysmacros.h
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_traverse.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_pool.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scrub.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_traverse.h
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_pool.h
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa.h
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/spa_impl.h
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/txg_impl.h
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/txg.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_cache.c
 stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
Directory Properties:
 stable/8/cddl/contrib/opensolaris/   (props changed)
 stable/8/cddl/contrib/opensolaris/cmd/zdb/   (props changed)
 stable/8/cddl/contrib/opensolaris/cmd/zfs/   (props changed)
 stable/8/cddl/contrib/opensolaris/lib/libzfs/   (props changed)
 stable/8/sys/   (props changed)
 stable/8/sys/amd64/include/xen/   (props changed)
 stable/8/sys/cddl/contrib/opensolaris/   (props changed)
 stable/8/sys/contrib/dev/acpica/   (props changed)
 stable/8/sys/contrib/pf/   (props changed)
 stable/8/sys/dev/xen/xenpci/   (props changed)
 stable/8/sys/geom/sched/   (props changed)