[m-rev.] for review: re-enable asm_fast grades on i*86 Windows

[Peter Wang]

On Wed, 22 Jan 2020 16:38:22 +1100 (AEDT), Julien Fischer <jfischer at opturion.com> wrote:
> 
> For review by anyone.
> 
> A more elegant fix would involve more surgery on the configure script
> than I want to do so close to the release.
> 
> I've tested this with GCC 7.2 on x86 Windows and it's fine.
> 
> Julien.
> 
> -----------
> 
> Re-enable asm_fast grades on i*86 Windows with GCC 5+.
> 
> configure.ac:
>      As above, there's no particular reason to disallow them other
>      than a little messiness in the configure script.

That's fine.

Peter