Fix all but the first SkyWorld being weird

When applying a schema to a machine, don't adjust the original schema
spawn position, but a clone of it so all further spawn positions are
not shifted multiple times.

Author: davenonymous

src/main/java/org/dave/compactmachines3/world/WorldSavedDataMachines.java

@@ -20,7 +20,6 @@
 import org.dave.compactmachines3.world.tools.StructureTools;
 
 import java.util.HashMap;
-import java.util.Map;
 import java.util.UUID;
 
 public class WorldSavedDataMachines extends WorldSavedData {

src/main/java/org/dave/compactmachines3/world/tools/TeleportationTools.java

@@ -118,7 +118,7 @@ public static void teleportPlayerToMachine(EntityPlayerMP player, int coords, bo
                 Logz.warn("Unknown schema used by Compact Machine @ %s", WorldSavedDataMachines.INSTANCE.getMachinePosition(coords));
             } else {
                 StructureTools.restoreSchema(schema, coords);
-                double[] adjustedSpawnPosition = schema.getSpawnPosition();
+                double[] adjustedSpawnPosition = schema.getSpawnPosition().clone();
                 adjustedSpawnPosition[0] += coords * 1024;
                 adjustedSpawnPosition[1] += 40;
                 WorldSavedDataMachines.INSTANCE.addSpawnPoint(machine.coords, adjustedSpawnPosition);