Re: [boost] Merged #149, "Encode architecture and address model in versioned layout names"

I've just merged https://github.com/boostorg/boost/pull/149, "Encode architecture and address model in versioned layout names", into the develop branch. Let's see how this goes.

Welcome to 2005. :-)

Now that building Boost with address-model=32,64 works, I think that we ought to build both for --build-type=complete on Windows. I'm less sure about --build-type=minimal, but given that (a) what minimal builds is determined by the configuration Visual Studio projects use by default (which is 32 bit) and (b) that we're getting more and more calls for 64 being built by default, it looks like --build-type=minimal ought to build both 32 and 64 as well.