PackedString

[malcolm-ffi at cs.york.ac.uk]

> > Is anybody actually depending on the old `CString'?  Or is
> > everybody using `PackedString' instead?
> 
> I don't believe anyone is using PackedString, except for Regex which
> arguably should be using CString instead.  I'd like to see a simpler
> PackedString which just corresponded to ByteArrays.

The nhc98 compiler uses PackedString extensively.  The interface is
very standard - all of ghc, hbc, and nhc98 support it.  Change the
implementation by all means if you wish, but not the interface.

Regards,
    Malcolm