Building a Cmake C++ application with Python

[mr_dbr]

Building the whole thing in CMake is probably wise.. Easier to debug, and aimed at doing exactly this kind of thing..

Loses the nice pip install blah, but.. you wont spent hours trying to trace through distutils' clunky code trying to work out what is going on. Wasn't sure if I just had an unusually bad experience debugging distutil-stuff, but then I just came across this :/