Less fancy token pasting, replacing them with inline functions where
possible, entirely removing unnecessary ones, and fixing smaller
issues here and there.
Part of P0186, funded by [Anonymous] and Blue Bolt.
Not only getting rid of the "useless" (and thankfully, consistent)
bitplane parameter, but also allowing those shortened macros to be
redefined for the upcoming little ZUN inconsistency.
Part of P0120, funded by Yanga.
The TH04 one might have the same function structure, but the only thing
that's actually identical in both games is the picture darkening loop.
Part of P0119, funded by [Anonymous] and -Tom-.
nmlgc