gfs2_edit savemeta needs to save freemeta blocks
    
    bz 502056
    
    The gfs2_edit savemeta function was not saving off
    blocks of type 2, which correspond to "free metadata" in
    gfs and "unlinked dinodes" in gfs2.  This turned out to be
    a problem because if that metadata is restored and gfs is
    tested against it, it resulted in metadata allocation
    problems.  For example, gfs_grow may make the decision to
    allocate a metadata block, and try to re-use a block that's
    marked as "free metadata" in the gfs bitmap.  But since the
    block hadn't been saved at "savemeta" time, the block was
    never restored as metadata and therefore the metadata
    header may be missing, so gfs-kernel withdrew with a file
    system error.