ItemList refactoring

Splitted the ItemList and MeaningfulIterator into an item and fluid
version.
Added an IdentityHashMap as additional item layer to the ItemList for a
faster access.
Refactored FluidList, findFuzzy will now return the same fluid instead of
an empty collection.

src/main/java/appeng/core/api/ApiStorage.java

@@ -41,6 +41,7 @@ import appeng.util.Platform;
 import appeng.util.item.AEFluidStack;
 import appeng.util.item.AEItemStack;
 import appeng.util.item.ItemList;
+import appeng.util.item.FluidList;
 
 
 public class ApiStorage implements IStorageHelper
@@ -67,13 +68,13 @@ public class ApiStorage implements IStorageHelper
 	@Override
 	public IItemList<IAEItemStack> createItemList()
 	{
-		return new ItemList<IAEItemStack>( IAEItemStack.class );
+		return new ItemList();
 	}
 
 	@Override
 	public IItemList<IAEFluidStack> createFluidList()
 	{
-		return new ItemList<IAEFluidStack>( IAEFluidStack.class );
+		return new FluidList();
 	}
 
 	@Override