Country code changes (ISO to IOC) are not saved in FSDB file

[Joerg Ewald]

Historically, FS has always stored the IOC country code in the country field, even though the field's name implies that the ISO code should be used.

A little while ago it was clarified that CIVL, and FAI in general, want us to use the IOC code, as is customary in sports.

When a pilot is imported from the WPRS, we use the IOC code. But as more and more external sources produce FSDB files, who insert the "correct" (ISO) code, we can get a mixed situation where some pilots are listed with ISO code, and others with IOC.

We cleaned this up a while ago, to convert all codes to IOC when an FSDB file is loaded. But through a change in the FSDB processing, this code conversion seems to no longer be stored in the FSDB.

Required: Store country code conversions in the FSDB