- Fix up directory in mdmonitor init script so that we restart mdmon like
        we are supposed to
    - Add a rule to run incremental assembly on containers in case there are
        multiple volumes in a container and we only started some of them in the
        initramfs
    - Make -If work with imsm arrays. We had too restrictive of a test in
        sysfs_unique_holder.
    - Make incremental assembly of containers act like incremental assembly of
        regular devices (aka, --run is needed to start a degraded array)