Synchronized source file headers (#3212)

* Alphabetically sorted includes.
* Updated copyright and license text to match across all files.
* Removed pragma once define in header files in lieu of ifdef guards.

src/map/path.cpp

@@ -1,12 +1,12 @@
-// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
+// Copyright (c) rAthena Dev Teams - Licensed under GNU GPL
 // For more information, see LICENCE in the main folder
 
 #include "path.hpp"
 
+#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <math.h>
 
 #include "../common/cbasetypes.hpp"
 #include "../common/db.hpp"
@@ -15,8 +15,8 @@
 #include "../common/random.hpp"
 #include "../common/showmsg.hpp"
 
-#include "map.hpp"
 #include "battle.hpp"
+#include "map.hpp"
 
 #define SET_OPEN 0
 #define SET_CLOSED 1