funPtrToAddr and addrToFunPtr

[Simon Marlow]

> How about adding these to Addr.lhs?
> 
>   funPtrToAddr  :: FunPtr a -> Addr
>   addrToFunPtr  :: Addr -> FunPtr a
> 
> They serve the same purpose as the existing ptrToAddr/addrToPtr

Well, we don't like to encourage the use of deprecated APIs, and I had
intended to remove it for the next major release (it's been deprecated
for well over 12 months).  Do you still need Addr for something?

Cheers,
	Simon