[m-rev.] for review: Update configuration for FreeBSD.

[Peter Wang]

On Thu, 15 Oct 2015 14:41:32 +1100, Paul Bone <paul at bone.id.au> wrote:
> On Thu, Oct 15, 2015 at 02:32:10PM +1100, Peter Wang wrote:
> > Let me know if there is anything in particular I should check.
> 
> Did you test with GCC too?  Or just clang?

Bit of both, not exhaustively.

> I can help if you want. I have FreeBSD 10.2-RELEASE-p5 on amd64.

Sure, I put the branch here
https://github.com/wangp/mercury-experimental/tree/freebsd

Peter