Switched all projects to atlasexternals-1.0.62.
- Bumped the version of MCUtils to 1.3.4 in
- Removed the unnecessary
-cargument from the CINT dictionary generation calls;
- Enabled the build of Minuit2 for/with ROOT 6.18/04.
At the same time made sure that
AthDerivation would both correctly pick up MCUtils-1.3.4, by adjusting/removing the appropriate files. (This part is a replacement for !31727 (closed).)