-Removed: BooleanSet classes are gone. (Unused anyways)
-Removed: Boolean2xMaps are also now gone. (Unused Anyways)
-Added: GlobalFlags that are shared across packages.
Each List implementation can be now turned off.
Or all Lists can be turned off.
ListIterator can't be turned of since it is a IndexBasedIterator and not
a List and a few implementation use them.