Option allowing to choose where to save CSV result files and other artifacts

[dkankows]

During the benchmark execution, rootbench generates CSV files and other artifacts. At the moment, the path where these files are being saved is not configurable. Would it be a good idea to add an option allowing to choose where to save these files? One of the use cases I can see for this feature would be running rootbench in a Singularity container. Singularity usually uses a read-only filesystem, so it would be great to be able to bind-mount some writable directory to the container and save all of the generated files to this directory.

[vgvassilev]

That's a good point.

Currently we configure the csv writing part here. We could add a configuration variable which defaults to the current place and if specified to set the new location.

Could you come up with a patch?