libpypa integration

The problem is the system default, on my system it is lib64 where it seems to be on ubuntu lib. That's a question of how the defaults are configured. I will set it to lib, but I am not sure if this will work everywhere.
It's also a question of the the buildsystem in the end, personally I would have loved to see autotools to be used over CMake, since that should unify those things.
However that's a different topic.