sci-chemistry/ball: Import tree changes

Package-Manager: portage-2.2.10
Add subslot-dependency on sci-physics/root, rebuilding is needed on each ROOT version string change. For more details c.f. #505358 .
Add subslot-dependency on sci-physics/root, rebuilding is needed on each ROOT version string change. For more details c.f. #505358 .
Merge pull request #209 from olifre/geant-vmc

Add subslot-dependency on sci-physics/root, rebuilding is needed on each...
Merge pull request #208 from olifre/vgm-subslot

Add subslot-dependency on sci-physics/root, rebuilding is needed on each...