Reduce overlay dependencies on global.h (8) (#2478)

* move variables into z64environment.h

* z_room.h

* z64sram.h, z64ss_sram.h, z64font.h, kanread.h

* z64lifemeter.h, z64debug.h, debug_arena.h

* buffers.h

* remove z_bgcheck global

* gamealloc.h

* suggestions

* .bdd

src/buffers/audio_heap.c

@@ -1,3 +1,5 @@
-#include "z64.h"
+#include "ultra64/ultratypes.h"
+#include "alignment.h"
+#include "buffers.h"
 
 ALIGNED(16) u8 gAudioHeap[0x38000];

src/buffers/gfxbuffers.c

@@ -1,4 +1,7 @@
-#include "z64.h"
+#include "alignment.h"
+#include "buffers.h"
+#include "gfx.h"
+#include "ultra64.h"
 
 ALIGNED(16) u64 gGfxSPTaskOutputBuffer[0x3000];
 

src/buffers/zbuffer.c

@@ -1,3 +1,6 @@
-#include "z64.h"
+#include "alignment.h"
+#include "buffers.h"
+#include "macros.h"
+#include "ultra64/ultratypes.h"
 
 ALIGNED(64) u16 gZBuffer[SCREEN_HEIGHT][SCREEN_WIDTH];