[m-dev.] reminder on foreign_proc

[Tyson Dowd]

Just a reminder that as of tonight's build, foreign_proc will be impure by
default.

Add a promise_pure or promise_semipure attribute to foreign_proc
to make it pure, or you can use pragma promise_pure.

pragma c_code is unchanged, so old code should work fine.

Thank you for your attention.

-- 
       Tyson Dowd           # 
                            #  Surreal humour isn't everyone's cup of fur.
     trd at cs.mu.oz.au        # 
http://www.cs.mu.oz.au/~trd #
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