the Word type

[Alastair Reid]

> OK, the question is whether Hugs should provide it with a full set
> of instances, including Storable, and allow it as a foreign type.

You'll be unsurprised to learn that I favour providing no ffi support
for it at all.  No Storable instance, no ffi support.  (And I think
GHC should do likewise.)

For backward and GHC compatability reasons, I think that, for now, we
should keep the other Word operations and instances and GreenCard can
provide support for Word by marshalling it as Word32.

A