Add license headers and remove useless includes

src/database.cpp

@@ -1,22 +1,24 @@
-#include "map.h"
-#include "mapsector.h"
-#include "mapblock.h"
-#include "main.h"
-#include "filesys.h"
-#include "voxel.h"
-#include "porting.h"
-#include "mapgen.h"
-#include "nodemetadata.h"
-#include "settings.h"
-#include "log.h"
-#include "profiler.h"
-#include "nodedef.h"
-#include "gamedef.h"
-#include "util/directiontables.h"
-#include "rollback_interface.h"
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
 
 #include "database.h"
+#include "irrlichttypes.h"
 
 static s32 unsignedToSigned(s32 i, s32 max_positive)
 {