Using static_spawnpoint in minetest.conf

- When return back from the nether, the player is teleported either to 5,
  35, -7 (something like that), or to the defined value of
  static_spawnpoint key in minetest.conf.

mods/nether/nether/portal.lua

@@ -522,7 +522,12 @@ function nether_port(player, pos)
 	minetest.sound_play("nether_teleporter", {pos=pos})
 	if pos.y < nether.start then
 		player_from_nether(player)
-		player:moveto({x=5, y=35, z=-7})
+		local pos_togo = {x = 0, y = 35, z = -7}
+		if minetest.setting_getbool("static_spawnpoint") ~= nil then
+			stsp_conf = minetest.setting_get("static_spawnpoint")
+			pos_togo = {x = stsp_conf:split(",")[1],y = stsp_conf:split(",")[2],z = stsp_conf:split(",")[3]}
+		end
+		player:moveto(pos_togo)
 	else
 		player:moveto({x=pos.x, y=portal_target+math.random(4), z=pos.z})
 		player_to_nether(player, true)