__thread keyword with gcc-4.9.2

[Joël Krähemann <jkraehemann@xxxxxxxxx>]

Hi

I just want to share my experience with gcc-5.2.0 fresh compiled this
morning and I'm building Xorg with it, right now.

Refering to:

https://sourceware.org/ml/libc-help/2015-10/msg00022.html

bests,
Joël