[m-rev.] for review: Make compare_ignore_case_ascii loop over code units.

[Peter Wang]

On Tue, 29 Oct 2019 00:53:23 +1100, Mark Brown <mark at mercurylang.org> wrote:
> 
> Why not compare I to the end index, and save decrementing Rem each
> iteration? That would be clearer in my opinion.

Done, thanks.

Peter