Rework AEItemStack (#3091)

* Use itemstack as itemdef
* HIGH_TAG/LOW_TAG should be compared both directions
* Remove getTagCompound
* Make Itemlist implementation independent
* Cache item id for performance reasons
* Add preconditions to saveguard against external meddling
* Chache itemDamage
* Remove IAEStackSearchKey for now, rename getDisplayStack

src/main/java/appeng/parts/automation/PartAnnihilationPlane.java

@@ -393,7 +393,7 @@ public class PartAnnihilationPlane extends PartBasicState implements IGridTickab
 		final double y = add.getY();
 		final double z = add.getZ();
 
-		final EntityItem overflowEntity = new EntityItem( w, x, y, z, overflow.getItemStack() );
+		final EntityItem overflowEntity = new EntityItem( w, x, y, z, overflow.createItemStack() );
 		overflowEntity.motionX = 0;
 		overflowEntity.motionY = 0;
 		overflowEntity.motionZ = 0;