[m-dev.] diff: remove support for cuts

[Zoltan Somogyi]

On 28-Mar-2000, Fergus Henderson <fjh at cs.mu.OZ.AU> wrote:
> That change breaks backwards compatibility.  You should not remove it, you
> should instead add a `pragma obsolete' declaration for it, and then wait a
> couple of releases before removing it.  This change should be mentioned in the
> NEWS file.
> 
> Also the ! predicate might still be useful for people converting Prolog code
> to Mercury, so I suggest that it be moved to library/prolog.m rather than
> being removed altogether.

These two suggestions are not fully compatible: if ! is moved to
library/prolog.m, people will have to add :- import_module prolog to their
code.

Zoltan.
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