Add a precompiled header for RELs (#2597)

src/d/actor/d_a_obj_bmshutter.cpp

@@ -1,8 +1,10 @@
 /**
- * @file d_a_obj_bmshutter.cpp
+* @file d_a_obj_bmshutter.cpp
  *
  */
 
+#include "d/dolzel_rel.h"
+
 #include "d/actor/d_a_obj_bmshutter.h"
 #include "d/actor/d_a_player.h"
 #include "d/d_com_inf_game.h"
@@ -12,8 +14,6 @@
 // External References:
 //
 
-UNK_REL_DATA;
-
 static const char* l_arcName = "K_saku00";
 
 static const f32 l_cull_box[6] = {-200.f, -100.f, -200.f, 200.f, 100.f, 200.f};