[RFC] exports and linkage for TR1

[Gabriel Dos Reis]

Paolo Carlini <pcarlini@suse.de> writes:

[...]

| On the other hand, at this stage it's up to us (v3) start taking
| things from tr1, adjust bits here and there and add to std. That seem
| more meaningful than adding exports for tr1 stuff - more generally tr1
| infrastructural work - when *by definition* tr1 is non normative and
| experimental, only a step toward C++0x.

yes, I think we can wait before dumping tr1 into std::.
I would not want libstdc++ makes the same mistake that MS suppliers
did in the past (which is why we can't write "std::hash_map").

-- gaby