Fix building with ACTS 34

[jmcarcell]

There have been a few changes it seems. This PR is a starting point to make it build (I'm going to pick up this PR for the nightlies) but I haven't tested anything else. In some places it's very obvious it won't work. How to keep up with ACTS should be rethinked maybe. It will get quite ugly to support old versions; one could just consider ACTS a moving target and not support old versions and be fine with master of FCCAnalyses with ACTS not being buildable in older releases.