Relocate Source to proper directory.

src/main/java/appeng/util/BlockUpdate.java

@@ -0,0 +1,29 @@
+package appeng.util;
+
+import java.util.concurrent.Callable;
+
+import net.minecraft.world.World;
+
+public class BlockUpdate implements Callable
+{
+
+	final World w;
+	final int x, y, z;
+
+	public BlockUpdate(World w, int x, int y, int z) {
+		this.w = w;
+		this.x = x;
+		this.y = y;
+		this.z = z;
+	}
+
+	@Override
+	public Object call() throws Exception
+	{
+		if ( w.blockExists( x, y, z ) )
+			w.notifyBlocksOfNeighborChange( x, y, z, Platform.air );
+
+		return true;
+	}
+
+}