[m-dev.] for review: liveness bug fix, take 2

[Fergus Henderson]

Zoltan Somogyi, you wrote:
> 
> compiler/liveness.m:
> 	Reapply the earlier change after fixing it. The problem was that
> 	the procedure body goal with the updated nonlocal annotation was
> 	not put back into the procinfo before the computation of the initial
> 	liveness, which therefore used the out-of-date nonlocal annotation.

That looks fine, please commit it.

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