Fixed missing release of fsh_lock in fsh_hook_remove.
Merge branch 'fsd_new' into fsh_test
Further changes to fshtestadm.
Removed fsh_fs_{enabled,disabled}() API. This shouldn't
exist in the first place.
Merge branch 'fsd_new' into fsh_test
Adjusted fstest to new fsh.
Added DTrace script for fshtestadm.
DTrace script now produces the same output as fshtestadm.
Added stress tests for fsh.
Added callbacks testing.