[patch] fix thread test cases for solaris.

[Paolo Carlini]

Andreas Tobler wrote:
> It was not meant as a complaint. And you should know that. I'm not
> complaining at all, I try to understand. But if nobody is able to give
> me an answer it might sound as a complaint. But this is not my fault.
To be clear, what sounds as a complaint is the use of words like
"astonished". That, honestly, I didn't like. That said, your help is
certainly welcome, I don't want to read another "astonished" in the near
future, if it's so easy to avoid ;)

Paolo.