After spending the last month staring at and comparing Jak 3 and Jak 1
versions of a bunch of `target` code for my jetboard mod, I figured this
would be a good opportunity to revive this ancient PR #1714 along with
some other small misc fixes/improvements.
Instead of directly replacing the old fields, I decided to opt for using
overlay fields to maintain backwards compatibility with existing manual
patches, files without ref tests and mods that might use these fields.
Hat Kid