(This is not expected to be their final location, but it makes them easier to relocate when necessary, and easier for users to edit until the whole project's file structure is finalized.)
Rename MORN/DAY/NITE to MORN_F/DAY_F/NITE_F; use MORN/DAY/NITE for shifted values (cleaner for person_events)
Prefix FLOOR to the `elevfloor` constants
Updated map and mapgroup macros to get around an rgbds bug.
Legendary beast locale handling annotated and relabeled.
Added a new constant NUM_ENGINE_FLAGS for use in the EngineFlagAction function. This will make it easier for modders to add or remove engine flags.
Updated macros that rely on the GROUP_, MAP_ constants to use the map macro
Added GROUP_NONE and MAP_NONE for the sake of compatibility with this new scheme
Added new macro elevfloor to simplify the definition of elevators under this new scheme
