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_canoe.cpp

@@ -3,7 +3,7 @@
  * 
 */
 
-#include "d/dolzel_rel.h"
+#include "d/dolzel_rel.h" // IWYU pragma: keep
 
 #include "d/actor/d_a_canoe.h"
 #include "d/d_com_inf_game.h"
@@ -199,7 +199,7 @@ static int daCanoe_Delete(daCanoe_c* i_this) {
 /* 804DB008-804DB0B0 000BA8 00A8+00 1/1 0/0 0/0 .text            setRoomInfo__9daCanoe_cFv */
 void daCanoe_c::setRoomInfo() {
     int room_no;
-    if (mAcch[0].GetGroundH() != -1000000000.0f) {
+    if (mAcch[0].GetGroundH() != -G_CM3D_F_INF) {
         room_no = dComIfG_Bgsp().GetRoomId(mAcch[0].m_gnd);
         tevStr.YukaCol = dComIfG_Bgsp().GetPolyColor(mAcch[0].m_gnd);
     } else {