To add a codeset:

1)  modify harvest data

    add data at the top

    modify do_TYPE function

    add functions named:

       _init_TYPE_SRC

       _read_TYPE_SRC

2)  modify data.TYPE.pl

    add a new section

    if there are non-ASCII names, add them to:

       $Data{TYPE}{SRC}{orig}{name}

    Otherwise you'll see warnings 'NON-ASCII'

    if there are new names in this list (except for the first codeset

    of a given TYPE), they must be explicitly allowed by adding them

    to:

       $Data{TYPE}{SRC}{new}

    or:

       $Data{TYPE}{SRC}{orig}{name}

    Otherwise you'll see warning 'new name not allowed'

3)  modify lib/Locale/Codes/Constants.pm

    Public Global Variables:

       @EXPORT

    Constants:

       use constant

       $ALL_CODESETS

4)  modify lib/Locale/Codes/TYPE.pod

       Supported code sets

       SEE ALSO (cite source)