[PATCH, v3] Bringing <mutex> and <condition_variable> up to spec.

[Paolo Carlini]

... hi Chris. Believe it or not, your message comes just in time: yesterday was reviewing the status of those facilities and noticed exactly the issues you are pointing out and trying to solve here. First blush you work is OK, give me a couple of days to finish some pending work and I will be back to you.

Thanks,
Paolo.

PS: We really also have to solve the -lrt issue ASAP.