Comment 4 for bug 941039

I had arrived at a similar fix for MacPorts and documented it here: https://plus.google.com/u/0/100382636415340600164/posts/U9mMqX9tGJu

The thing is that MacPorts now works, and all the ports I have tried with it since then build. Something else---perhaps boost or the strictness of the compilers---has been changed.