* various d_bg debug cleanup

* matching forward decl for compiler compatibility

* fix build

* Wrap >4-char literals in a MULTI_CHAR macro

Modern compilers do not support CW's non-standard behavior with
>4 char literals. We can, however, use a constexpr function to
compute the u64 values directly. This leaves <=4 char literals
unchanged.

* Replace non-pointer usages of NULL with 0

* Define NULL to nullptr on C++11 and above

* Fix more -Wpointer-arith and -Woverflow warnings

* Replace u32/s32 with uintptr_t/intptr_t where appropriate

* JSUOutputStream: Overload all standard int types

* Fix missing line numbers for debug

* Fix horse inlines and HIO

* Match daHorse_c::setEffect

* Improve a few debug matches

* Match daHorse_c::checkHorseNoMove (half fake)

* Update configure.py

* some wii OS fixes

* remove old dol2asm comments

* remove dol2asm.h

* remove function address comments

* normalize ATTRIBUTE_ALIGN usage

* DECL_WEAK macro

* fix gcc attribute weak macro

* wrap more mwcc specific things in ifdefs

* fixes

* fix revo sdk version flags

* fixes

* Remove d_a_npc3.cpp

This file appears to not actually be real and the asserts in its
functions all reference d_a_npc2.cpp instead.

* d_a_npc debug almost matching

* Fix GetPolyIndex and GetBgIndex, fixing a couple regallocs

* Match daNpcCd2_c::checkFearSituation and daNpcCd2_c::getAnmP

* Match daAlink_c::jointControll

* Clean up float class checks

* Move float constants to global.h

* Fix JUT_ASSERT to be a nested define

* Switch names that appear in asserts to be constants instead of defines

* Replace `0` in asserts with `NULL` or `FALSE`

* Fix fpclassify

* Fix ARRAY_SIZE

* Use G_CM3D_F_INF

* More fixes for fpclassify

* Remove FLOAT_LABEL

* Remove incorrect FLAG_ON macro

* Remove UNK_BSS macro

* Silence clangd unused header warning for PCH

* some j3d cleanup

* begin using uintptr_t

* j3dgraphbase cleanup

* j3dgraphanimator cleanup