Work on people DataSynth

I added CMake Files for all DataSynth related subprojects, so that one could use it now.
Besides that, Eigen2 was replaces by Eigen3, OpenMP is supported in BVHDBSparsify and I used a CodeStyle to format the Code to look more PCL like (I do not use Eclipse but ArtisticStyle, so hopefully it is almost like the PCL code style.)