[m-dev.] for review: add predicate for reporting warnings to error_util.m

[Fergus Henderson]

On 09-Dec-1999, Robert Ernst Johann JESCHOFNIK <rejj at cat.cs.mu.OZ.AU> wrote:
> 
> compiler/error_util.m:
>   - Add comments in the interface section for write_error_pieces, and 
>     list_to_pieces, briefly explaining what they do.
>   - Add a new predicate, report_warning, to handle warning messages. If the
>     --halt-at-warn flag is set, the exit status is set to error.

That looks good.  And it's small enough and simple enough that
I'm confident it won't cause any problems for the release, so
feel free to commit it.

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
WWW: <http://www.cs.mu.oz.au/~fjh>  |  of excellence is a lethal habit"
PGP: finger fjh at 128.250.37.3        |     -- the last words of T. S. Garp.
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