Header fixes

- Fix conflict with RPU command_extra.h
- Fix undefined debug_array_str error

artifacts/scripting/headers/lib.obj.h

@@ -0,0 +1,11 @@
+#ifndef LIB_OBJ_H
+#define LIB_OBJ_H
+
+#include "define_lite.h"
+#include "define_extra.h"
+
+#define obj_name_safe(obj)          (obj_name(obj) if obj else "(null)")
+#define get_active_weapon(critter)  critter_inven_obj(critter, (2 - active_hand) if critter == dude_obj else INVEN_TYPE_RIGHT_HAND)
+#define obj_can_hear_and_shoot_obj(critter, target)  (obj_can_hear_obj(critter, target) and obj_blocking_line(critter, tile_num(target), BLOCKING_TYPE_SHOOT) == target)
+
+#endif