Extracts item comparison from Platform into their own helper. (#2555)

* Extracts item comparison from Platform into their own helper.

Renamed methods to be more more fitting for the actual comparison.
Added documentation about each methods behaviour.

src/main/java/appeng/recipes/handlers/Grind.java

@@ -73,6 +73,6 @@ public class Grind implements ICraftHandler, IWebsiteSerializer
 	@Override
 	public boolean canCraft( final ItemStack output ) throws RegistrationError, MissingIngredientError
 	{
-		return Platform.isSameItemPrecise( this.pro_output[0].getItemStack(), output );
+		return Platform.itemComparisons().isSameItem( this.pro_output[0].getItemStack(), output );
 	}
 }