[ 2015-05 Lenexa, SG1 response ]

Strong "don't care" reaction from SG1, after pointing out that this only matters in non-portable code, which can call pthread_self() or the like anyway, but the change also doesn't add any non-trivial implementation requirements. This defused initial strong opinions on both sides. Since this is essentially a feature request, we did not have sufficient consensus to proceed at this point. There was a feeling we should reconsider after making more sense out of the much more general TLS issues we have been discussing.