(svn r970) Added 2nd data path for all non-windows OSes

added completely customizable lang path (all non-Windows OSes)

ttd.c

@@ -496,8 +496,15 @@ void LoadIntroGame()
 	// Generate a world.
 	sprintf(filename, "%sopntitle.dat",  _path.data_dir);
 	if (SaveOrLoad(filename, SL_LOAD) != SL_OK)
-		GenerateWorld(1); // if failed loading, make empty world.
-
+#if defined SECOND_DATA_DIR
+		{
+		sprintf(filename, "%sopntitle.dat",  _path.second_data_dir);
+		if (SaveOrLoad(filename, SL_LOAD) != SL_OK)
+#endif
+			GenerateWorld(1); // if failed loading, make empty world.
+#if defined SECOND_DATA_DIR
+		}
+#endif
 	_opt.currency = _new_opt.currency;
 
 	_pause = 0;