OK, this is the big one. We still keep using `#include` guards only
where we absolutely need to, but with each header now being valid in
isolation, this can now actually help *minimize* the length of each
translation unit's `#include` list. Turns out that after removing all
the duplicates, we only *actually* need to guard 29 headers across all
5 games.
Part of P0285, funded by [Anonymous] and iruleatgames.
That's where TH04 crashes in Stage 5 without an EMS driver, but the
code is fine?! (Well, apart from its silly behavior in the Extra
Stage.)
Part of P0169, funded by Blue Bolt.
Oh, an EMS function that does one single thing, and is not potentially
bugged within TH05's original sprite limits?! (Although that last part
might have just been a happy accident.)
Part of P0168, funded by Blue Bolt and rosenrose.
Stupid one-off functions deserve stupid names, Part 3. This time also
coming with an unnecessary precondition.
Part of P0168, funded by Blue Bolt and rosenrose.
No, I'm not copying exactly what was on ZUN's monitor during the 2010
MAG・ネット documentary. Also, this one was very lucky not to receive
a stupid function name.
Part of P0168, funded by Blue Bolt and rosenrose.
nmlgc