Not applying this leak to TH03 since it would have more than one
`key_det` variable, resulting in names that are as much fanfiction as
the current ones…
Don't really understand the other games yet because they start introducing
joystick support and TH03 has multiplayer and then there are these master.lib
modifications that don't really make any sense to me, especially when you add
that TH04 seemingly does not read js_stat *at all*, yet still works just fine
with a gamepad and... urgh.