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_npc2.cpp

@@ -395,7 +395,7 @@ int daBaseNpc_c::execute() {
     field_0x9d4 = mAcch.m_gnd;
 
     mGroundY = mAcch.GetGroundH();
-    if (mGroundY != -1000000000.0f) {
+    if (mGroundY != -G_CM3D_F_INF) {
         field_0x918 = daBaseNpc_getGroundAngle(&field_0x9d4, field_0x91a.y);
         setEnvTevColor();
         setRoomNo();