Tag to be used with the main branch of atlas/athena. Update(s) since 2.0.165: - Updated to GeoModel version 4.5.0; - Updated COOL and CORAL to version 3.3.14; - Updated Coin3D to hash 5297f6c; - Made the Gaudi build itself set up Vc for the build/runtime environment; - Made AtlasCompilerSettings.cmake explicitly check whether the compiler understands "-march=x86-64-v2" before it would set it up.