Segmentation fault in openmp simple routine from libgomp testsuite.

[FX Coudert]

> The only sure-fire fix I can think of is to actually build
> two static versions of libgfortran -- one threaded and one
> not threaded.  I'm not sure this is worth the effort, really.
> I'd be more inclined to put a couple of checks in such that
> the static libgfortran only runs non-threaded, and force
> people to use shared libgfortran for OpenMP.

Hum, there are some platforms where libgfortran (and other target 
libraries) cannot be built as shared libraries. i386-mingw32 is an 
example of that. We've been careful until now to keep static 
libgfortran working even as a static library, and it would be a pity 
not to be able to run OpenMP on this platform.

FX