Decompile z_play.c and Match/Document some of z_view.c (#74)

* Decompile z_play.c and Match/Document some of z_view.c

Also fix the last non matching in z_sample.c and update some game state functions.

* Suggestions from PR #74

* Fix undefined reference to Gameplay_DrawOverlay

* Suggestion from PR #74 (2)

* Fix a fake argument in func_800BC450

src/overlays/actors/ovl_Obj_Makekinsuta/z_obj_makekinsuta.c

@@ -6,6 +6,8 @@
 
 #include "z_obj_makekinsuta.h"
 
+#include <vt.h>
+
 #define FLAGS 0x00000010
 
 void ObjMakekinsuta_Init(ObjMakekinsuta* this, GlobalContext* globalCtx);

src/overlays/actors/ovl_Obj_Makekinsuta/z_obj_makekinsuta.h

@@ -3,7 +3,6 @@
 
 #include <ultra64.h>
 #include <global.h>
-#include <vt.h>
 
 typedef struct {
     /* 0x0000 */ Actor actor;