[m-rev.] for review: Enable thread-local allocation and parallel marking on more platforms.

[Julien Fischer]

On Tue, 12 Aug 2014, Peter Wang wrote:

> I intend to apply this on the 14.01 branch.  I think it should be fine,
> but if someone could test it on an SMP OS X machine (e.g. bootcheck in
> hlc.par.gc) then that would be better.

I will also test this one on 32-bit Cygwin.

Cheers,
Julien.