With the upcoming `#include` cleanup, it finally makes sense to split
off all graphics-related code into its own header. In turn, it makes
more sense to store all of these future master.lib headers in, well,
the master.lib directory, which provides a new 8 characters for their
file names. Turns out that the rationale I gave for the root directory
placement in 8266bbd didn't hold up 3½ years later…
(Also, the `pc98.h` declarations will eventually be split into
`game/coords.hpp` and something in `platform/x86real/pc98/`.)
Part of P0284, funded by [Anonymous] and Blue Bolt.
Over on the `debloated` branch, we're going to use them in our own
platform-specific code, which obviously is not decompiled from
anything.
Part of P0232, funded by [Anonymous].
The single underscore version is actually slightly more supported among
the compilers I've seen so far. Also added the exact list now.
Part of P0183, funded by Yanga and [Anonymous].
Lovely. Turns out that all it needed to motivate the previous research
was one function that is simply too precious to be kept in ASM…
Part of P0137, funded by [Anonymous].
nmlgc