This decision was made to reduce the complexity of using .include whilst
juggling with tools/scaninc and tools/preproc:
- tools/scaninc doesn't apply the proper search rules for .include (it
  assumes #include behavior). In particular, it doesn't consider paths
  starting from $PWD, and doesn't scan the included files as a result.
- .include had to be processed before #include by preproc in many cases,
  as code was being included that had to be preprocessed by CPP (think
  of #define). This contradicts standard GCC behavior.

To make include paths consistent across the asm/ data/ and src/
directories, the following files were moved:
- constants/ → include/asm/constants/
- asm/macros/ → include/asm/macros/
- asm/macros.inc → include/asm/macros.inc
- include/macros/m4a.inc → include/asm/macros/m4a.inc

As part of the necessary changes for this to work, the scaninc method in
the makefile was improved to generate .d files that don't choke when
files are missing.

* fully decomp luminous cave

* remove header file. this one isn't ready yet

* doc few fields and func

* doc more of luminous cave

* more sese grind

* match sub_802ABF8

* some more work

* decompile last function in pokemon_1.s

* some pokemon related decomp

* more decomp

* decomp another function

* decompile function

* another one

* decompile GetPokemonLevelData

* decompile more

* more decomp

* more structure and decomp

* decomp another function (need to do some renaming)

* rename some stuff

* I cant do anything without committing these 2 files

* decompile sub_8091290

* decompile sub_80912c8

* rename functions / struct field

* more names

* decompile 80913A0

* decompile GetItemMove

* decompile sub_80913E0

* rename function

* decompile CanSellItem function

* rename inventory struct

* add some item check functions

* fix renaming stuff

* this file shouldnt have been here

* forgot merge conflict

* decompile more item functions

* rename some stuff

* fix HM/TM naming

* Update src/code_801AFA4.c

Use enum value for USED_TM

* Fix incorrect value

Co-authored-by: Seth Barberee <seth.barberee@gmail.com>

* move Thunderwave and Tiny Woods pokemon to json

* rule tweaking to actually build tool before parsing JSON

* delete .inc pokemon for tiny Woods and Thunderwave

* silence git complaining about br_ips and ips_patch

* use defines for species and pass the header file for species

* convert sinister woods

* convert MtThunderPeak

* convert silent chasm

* add trial floor_id w/ tiny woods

* change make rule name to fix compile

* MtSteel converted and bugfix

* convert few floor headers and great canyon pokemon

* code cleanup

* unify unkData into UnkTextStruct2

* more code cleanup and some text decomp

* doc more funcs and decomp/split some stuff

* document more save stuff

* more save work and move some data

* pika sniped UpdateNatureTotal

* decomp a litle and convert a few more dungeons

* better scanning for json files

* mt freeze and peak