[CDG5] Linked patches

[Elliot Nunn]

https://github.com/elliotnunn/lpch

They've been harder than I thought. This is a lot like reversing the
NewWorld ROM. I need to insert a lot of NOPs and create many placeholder
symbols in assembly just to get something I can feed into vbindiff.

I expect to make some progress, but even one all the code lines up I do
anticipate terrible trouble getting the jump table offsets to build
identically. In an analogous situation, with the Process Manager and
DAHandler, I got one to match but not (quite) the other.

Wish me luck!