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/container/implementations/ContainerNetworkTool.java

@@ -73,7 +73,7 @@ public class ContainerNetworkTool extends AEBaseContainer
 		{
 			if( !currentItem.isEmpty() )
 			{
-				if( Platform.itemComparisons().isEqualItem( this.toolInv.getItemStack(), currentItem ) )
+				if( ItemStack.areItemsEqual( this.toolInv.getItemStack(), currentItem ) )
 				{
 					this.getPlayerInv().setInventorySlotContents( this.getPlayerInv().currentItem, this.toolInv.getItemStack() );
 				}