[CMake] CMakeifying Boost

[christopher baus]

> And I'll chime in that I've CMakeified the boost threading library,
> and it was pretty trivial. I put the header files in one place, and
> listed all the .cpp files in libs/thread/src into a library target. I
> changed config/user.hpp to define BOOST_ALL_NO_LIB to supress their
> library version autodetection. I think that was it.


Cool.  You should release that to the boost list.  I use CMake and boost
and I'm currently building boost with bjam.  It's cumbersome.

Christopher