LP#1306258: add seed data for various MARC21 fixed fields

LP#1306258: add seed data for various MARC21 fixed fields

This patch adds coded value map data for various MARC21
fixed fields, thereby enabling the use of the context
menu to populate them when using the MARC editor.  The
fields that this patch provides data for are:

Alph (Original alphabet or script of title)
Biog (Biography)
Conf (Conference publication)
DtSt (Type of date/Publication status)
Fest (Festschrift)
GPub (Government publication)
Ills (Illustrations)
Indx (Indx)
MRec (Modified record)
S/L  (Entry convention)
TMat (Type of visual matieral)

This patch was generated by utility that parses a data
file used by the Koha project to extract valid values
for various positions in the MARC21 008 field. The utility
can be found in the collab/gmcharlt/fixed-field-value-converter
branch of Evergreen's working/random repository:

http://git.evergreen-ils.org/?p=working/random.git;a=shortlog;h=refs/heads/collab/gmcharlt/fixed-field-value-converter

Signed-off-by: Galen Charlton <gmc@esilibrary.com>