[m-rev.] for review: Upgrade Boehm GC to v7.6.2

[Peter Wang]

On Tue, 9 Jan 2018 21:58:33 -0500 (EST), Julien Fischer <jfischer at opturion.com> wrote:
> The upgraded collector is available in rotd-2018-01-09.  I've tested on
> OS X (10.11) and it seems fine; I'll check Windows over the next few
> days.  If you have something running Alpine Linux available (or anything else
> using the musl libc), could you please check that the rotd-2018-01-09
> source distribution works on it and let me know.

Hi Julien,

It works correctly under Alpine Linux as well.

Peter