Clean up code, remove fakematches, add UNUSED, enable warnings (#2992)

* 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

include/global.h

@@ -44,6 +44,10 @@
 #define ROUND(n, a) (((u32)(n) + (a)-1) & ~((a)-1))
 #define TRUNC(n, a) (((u32)(n)) & ~((a)-1))
 
+// Silence unused parameter warnings.
+// Necessary for debug matches.
+#define UNUSED(x) ((void)(x))
+
 #ifndef decltype
 #define decltype __decltype__
 #endif
@@ -68,6 +72,7 @@
 // Silence clangd errors about MWCC PPC intrinsics by declaring them here.
 extern int __cntlzw(unsigned int);
 extern int __rlwimi(int, int, int, int, int);
+extern void __dcbf(void*, int);
 extern void __dcbz(void*, int);
 extern void __sync();
 extern int __abs(int);