gfs2_convert: gfs2_convert doesn't convert quota files
    
    With this patch, gfs2_convert now assigns the metadata
    and data blocks of the old quota file to the newly
    created quota inode in the master directory.
    Instead of having a initialized quota file, we now have
    a quota file that preserves all teh quota information
    from the gfs1 filesystem.
    
    Resolves: rhbz#589820
    Signed-off-by: Abhi Das <adas@redhat.com>