Fix JUT_ASSERT and several other macros (#2711)

* 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

src/d/actor/d_a_L7low_dr.cpp

@@ -3,7 +3,7 @@
  * 
 */
 
-#include "d/dolzel_rel.h"
+#include "d/dolzel_rel.h" // IWYU pragma: keep
 
 #include "d/actor/d_a_L7low_dr.h"
 #include "d/d_com_inf_game.h"
@@ -136,7 +136,7 @@ static int useHeapInit(fopAc_ac_c* i_this) {
 /* 805AAC5C-805AAD58 0006DC 00FC+00 1/1 0/0 0/0 .text            CreateHeap__11daL7lowDr_cFv */
 int daL7lowDr_c::CreateHeap() {
     J3DModelData* modelData = (J3DModelData*)dComIfG_getObjectRes("L7lowDr", 10);
-    JUT_ASSERT(244, modelData != 0);
+    JUT_ASSERT(244, modelData != NULL);
     mpModelMorf = new mDoExt_McaMorfSO(modelData, NULL, NULL, (J3DAnmTransform*)dComIfG_getObjectRes("L7lowDr", 4), 0, 1.0f, 0, -1, &mSound, 0x80000, 0x11000084);
     if (mpModelMorf == NULL || mpModelMorf->getModel() == NULL) {
         return 0;