[Bug other/63758] liblto_plugin.so has undefined reference to _environ on OSX

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63758

--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Nick Clifton from comment #5)
> Ping ?
> 
> The patch works for us, and fixes a problem that a customer was having, so
> we would really like to see it checked in.

If I don't hear anything by the weekend, I'll post a rebased patch to @patches
(it's been in my local tree since ….)