Add Filemaker XML source dataset.

Fetched from
<URL: https://gtsvn.uit.no/biggies/trunk/termdb/src/db-colls/terms/mekanikk-1999/meksme-utf8.html >.

According to Svein Lund, this is his source data set for the 1999 book,
a data set he donated to the University of Tromsø.  He donated the same
data set to Petter Reinholdtsen 2020.