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/tile/misc/TileCharger.java

@@ -86,7 +86,7 @@ public class TileCharger extends AENetworkPowerTile implements ICrankable, IGrid
 		try
 		{
 			final IAEItemStack item = AEItemStack.loadItemStackFromPacket( data );
-			final ItemStack is = item.getItemStack();
+			final ItemStack is = item.createItemStack();
 			this.inv.setStackInSlot( 0, is );
 		}
 		catch( final Throwable t )