Yes, they will come for free, but you must link against Leopard (you
must have missed my original email that stated this). Foundation uses
Fast Enumeration when it can (ie: not just 'for .. in' statements). We
discovered that there are some bad apps out there that would crash
because of this. For binary compatibility, we can't have people's apps
crashing, and instead log a warning. When the link on Leopard, they
will start raising exceptions.
