(run2) Rewrite CMake configuration in "modern CMake"
See LHCb!3126 (merged) LBCOMP-23, run2-patches version of !931 (merged)
Requires Rec!2620 (merged)
Edited by Marco Clemencic
See LHCb!3126 (merged) LBCOMP-23, run2-patches version of !931 (merged)
Requires Rec!2620 (merged)