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_npc_kolinb.cpp

@@ -3,7 +3,7 @@
  * 
 */
 
-#include "d/dolzel_rel.h"
+#include "d/dolzel_rel.h" // IWYU pragma: keep
 
 #include "d/actor/d_a_npc_kolinb.h"
 
@@ -317,7 +317,7 @@ cPhs__Step daNpc_Kolinb_c::create() {
         mGndChk = mAcch.m_gnd;
         mGroundH = mAcch.GetGroundH();
 
-        if (mGroundH != -1000000000.0f) {
+        if (mGroundH != -G_CM3D_F_INF) {
             setEnvTevColor();
             setRoomNo();
         }