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/JSystem/JKernel/JKRDvdArchive.cpp

@@ -290,7 +290,7 @@ u32 JKRDvdArchive::fetchResource_subroutine(s32 entryNum, u32 offset, u32 size,
         switch (fileCompression) {
         case COMPRESSION_NONE:
             buffer = (u8*)JKRAllocFromHeap(heap, alignedSize, sizeof(SArcHeader));
-            JUT_ASSERT(675, buffer != 0);
+            JUT_ASSERT(675, buffer != NULL);
 
             JKRDvdToMainRam(entryNum, buffer, EXPAND_SWITCH_UNKNOWN0, alignedSize, NULL,
                             JKRDvdRipper::ALLOC_DIRECTION_FORWARD, offset, NULL, NULL);