Problem with `string', threading and shared libraries.

[Benjamin Kosnik]

Let's try to keep the cc list down to a sane number please.

> Well, using different compilers can always result in different
> mangling for std::string.  In this case, it's the same version of GCC
> built with different configure arguments, but the configure arguments
> still make them different compilers.

We're talking about the same compiler here, same library version numbers.

I believe it's possible to use a gcc-pthreads compiler to link 
gcc-non-pthreads "C" libraries, for instance. I see no reason why C++ 
should be any different.

Please correct me if I'm wrong.

-benjamin