Fixing bugs found when implementing Bidirectional Iterator unit tests.

-Fixed: AbstractList/ImmutableList/ArraySet/ArrayMap skip/back implementation was causing crashes and didn't update the last returned value.
-Fixed: ArraySet/ArrayMap previous was not subtracting before returning value.
-Fixed: BidirectionalIterator back was calling the object variant instead of the TypeSpecific Variant.
-Fixed: TreeSets/Maps Iterator now fully supports backwards Iterating.
-Added: Specialized skip/back function to improve speed in ImmutableHashSet/LinkedHashSet/CustomLinkedHashSet

src/builder/resources/speiger/assets/collections/templates/maps/interfaces/OrderedMap.template

@@ -1,6 +1,9 @@
 package speiger.src.collections.PACKAGE.maps.interfaces;
 
 import speiger.src.collections.PACKAGE.utils.maps.MAPS;
+#if !TYPE_OBJECT
+import speiger.src.collections.PACKAGE.sets.ORDERED_SET;
+#endif
 import speiger.src.collections.objects.collections.ObjectBidirectionalIterator;
 import speiger.src.collections.objects.sets.ObjectOrderedSet;
 /**
@@ -94,6 +97,10 @@ public interface ORDERED_MAP KEY_VALUE_GENERIC_TYPE extends MAP KEY_VALUE_GENERI
 	
 	@Override
 	public ORDERED_MAP KEY_VALUE_GENERIC_TYPE copy();
+	@Override
+	public ORDERED_SET KEY_GENERIC_TYPE keySet();
+	@Override
+	public ObjectOrderedSet<MAP.Entry KEY_VALUE_GENERIC_TYPE> ENTRY_SET();
 	
 	/**
 	 * Creates a Wrapped SortedMap that is Synchronized