* 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

* move math to cmath

* replace stdarg to cstdarg

* change stdint to stdint.h

* minor fixes

* change stdio to cstdio

* change stdlib to stdlib

* renamed ctype to cctype

* fix missing argument for UNSET_FLAG

* Remove NDEBUG_DEFINED fakematch, clean up getName temps

* Fix ifdef

* Fix bad JSystem pch ifdef breaking decomp.me

* Remove Acch Chk fakematches

* Private Acch fields

* Fix some clangd errors in headers

* Add UNUSED macro for matching debug parameters

* Enable clangd unused-parameter warning

* Remove extern from initializers

Probably added by dol2asm?

* Fix process profile definitions

* Remove leftover dol2asm address comments

* Remove some unnecessary double casts

* Enable some more clangd warnings

* Fix missing usages of fopAcM_ct

* Fix wrong enum usage

* Fix more fakematches

* 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

* some JAudio work

* audio cleanup checkpoint

* checkpoint more audio cleanup

* fix symbols

* more z2 cleanup

* fix regression

* fix build

* some fixes

* Debug matches and remove fake matches

* Fix false equivalencies, regallocs, and vtable orders

* Fix PAL splits

* d_a_obj_fallobj OK

* J3DMatBlock equivalent