[m-rev.] diff/for review: allow bootstrap in decldebug grades

[Ralph Becket]

Zoltan Somogyi, Wednesday, 18 May 2005:
> Post-commit reviews welcome.
> 
> Zoltan.
> 
> library/io.m:
> 	Allow the compiler to bootstrap in decldebug grades without increasing
> 	the detstack size. Do this by making the predicates whose very deep
> 	recursion used to lead to exhausting the detstack into two-level loops,
> 	with never more than 1000 stack frames of the inner recursive predicate
> 	on the stack at a time. To reduce the time impact in grades in which
> 	tail recursion is not disabled, only use the new setup in debug grades.

That looks fine.
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