Added method to set spawn location

src/main/java/org/bukkit/craftbukkit/CraftWorld.java

@@ -69,6 +69,15 @@ public class CraftWorld implements World {
         return new Location(this, spawn.a, world.e(spawn.a, spawn.c), spawn.c);
     }
     
+    public boolean setSpawnLocation(int x, int y, int z) {
+        try {
+            world.q.a(x, y, z);
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+    
     public Chunk getChunkAt(int x, int z) {
         return this.provider.d(x,z).bukkitChunk;
     }