experimental: move into separate branch, merge back when compiling

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
cmake: rewrite of the cmake config file

This fixes #3 since pkg-config is not used anymore as a backend

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
cmake: add files that were lost in the cmake changes

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
Merged with orocos/orocos_kinematics_dynamics master