* Better long-filename handling. Reads SOM ABI compliant extended

    * Better long-filename handling.  Reads SOM ABI compliant extended
        names, but doesn't quite write compliant extended names yet.
        * som.c (som_slurp_extended_name_table): Delete function.  The
        generic code will handle things correctly.
        (som_slurp_armap): Seek to the beginning of the next member.
        (normalize): New function.
        (som_bfd_ar_write_symbol_stuff): Take the size of the extended
        name table into account when computing the file offsets in the
        SOM dictionary.  Make sure to align to an even boundary.
        (som_write_armap): Initialize the checksum to zero.
        (ar_maxchars): Fix.  Opps.