strerror_r in libgpg-error 0.5 on Solaris

[Andreas Almroth]

Hi,

I have compiled libgpg-error 0.5 on Solaris 2.8 and encountered the
classic problem with strerror_r.
In Solaris the function strerror is thread-safe, and no _r function
exists.

It would be nice if the configure script could consider this when on
Solaris platform. I don't know enough about autoconf so I can
unfortunately not easily fix a patch for this myself. Well, maybe I
should try...
A perhaps non-important issue, but still...

Cheers,
Andreas