[m-rev.] for post-commit review: speed up string.format for integers

[Zoltan Somogyi]

On Wed, 12 Nov 2014 19:22:06 +1100, Julien Fischer <jfischer at opturion.com> wrote:
> Was defining ML_USE_SPRINTF to be MR_FALSE intentional at this stage?

No. I will undo it in my next commit, in about an hour.
Thanks for catching it.

Zoltan.