[m-rev.] for review: ALLOW_BOTH_HI_LO_LEVEL_CODE

[Julien Fischer]

On Mon, 2 Apr 2018, Zoltan Somogyi wrote:

> I had to rebuild my workspaces a few too many times after
> the recent spate of changes to configure.ac.
>
> For review by anyone.

That's fine.

Julien.