[m-dev.] Deprecating stuff in builtin module

[Zoltan Somogyi]

On Mon, 30 Nov 2015 16:02:52 +1100 (AEDT), Julien Fischer <jfischer at opturion.com> wrote:
> 1  The inst aliases 'new == free' and 'old == any'.  These were the names that
> HAL used and were introduced into Mercury by G12 so people used to HAL could
> pretend they were still using it.
> 
> 2. The modes 'no' and 'oo'.  Again, these were for compatibility with HAL.
> 
> 3. The modes 'input' and 'output'.
> 
> 4. The function promise_only_solution/1 and predicate promise_only_solution_io/4.
> 
> I propose to delete (1) and (2) immediately and deprecate (3) and (4). 
> Any objections?

No objection from me, but I don't think we have any facilities
for marking a *mode*, as opposed to a *predicate*, as obsolete.

Zoltan.