vmmlib lacks of find_package about vmmlib

[eile]

Can't reproduce:

[tsf-484-wpa-2-061 Livre sortlast]% clear ; ninja -C ../build install
[...]
[tsf-484-wpa-2-061 Livre sortlast]% ls ../build/install/share/vmmlib/CMake/
options.cmake           vmmlibConfig.cmake      vmmlibConfigVersion.cmake   vmmlibTargets.cmake

[eile]

You do need cmake 3 for this. We will make this mandatory as soon as Ubuntu 16.04 is out, so better get ready.

Let me know if you see any problem with this.

[adevress]

That's fine for me, as long as it is consistent and we have cmake 3 everywhere, which should be the case.