Clean and update CMake superbuild sub-projects (!7) · Merge requests · LidarView / LidarView-Superbuild

Minor modifications in CMake configurations of superbuild sub-projects.

Build Ceres with CXX11 support as C++11 standard is already used
Build Ceres and Glog as shared libs (used multiple times)
Use official Glog version tag (v0.4.0) instead of commit as the release is now available
Remove Eigen and Flann tests building
Fix CMake variables names
Set PCL C++ standard to 14 as requested in doc.
Remove unused install path for individual sub-projects
Use same CMake boolean convention (ON/OFF) for better clarity

@nick.laurenson @lea.vauchier @melanie.carriere Could you have a quick review of that please?

Clean and update CMake superbuild sub-projects