RFR: 8225035: Thread stack size issue caused by large TLS size

[Florian Weimer]

* Jiangli Zhou:

> On both glibc 2.24 and 2.28, by default I see there is one page memory
> for static TLS, without explicitly defining any __thread variables in
> user code.

And glibc uses static TLS for errno and other things, so this is not
going away.

Thanks,
Florian