(WIP) Rudimentary version of Wii IPC determinism.  Ported from my old udpnet branch.

This version always starts from a blank slate NAND.  Might not be complete.

Because to me, "location of X user data and "which of {X, Y} to use for this" are logically distinct ideas .  I would not expect the output of File::GetUserPath to change unless settings changed, as opposed to possibly changing depending on the current emulation mode.