WIP: various fixes for DD4Hep build
Goes with Lbcom!481 (merged), Rec!2070 (merged), Brunel!1019 (merged), Moore!494 (merged) Based on top of !2579 (merged)
Goes with Lbcom!481 (merged), Rec!2070 (merged), Brunel!1019 (merged), Moore!494 (merged) Based on top of !2579 (merged)