geant4-data-rpm: set environment variables required by GEANT4

This allows exporting required environment variables for GEANT4
data packages, which is needed to run GEANT4 in RPM environment.

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
geant4-parfullcms: add ParFullCMS as new external

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
geant4-bench: instructions for ParFullCMS benchmark

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Merge pull request #370 from davidlt/geant4-ParFullCMS-bench

GEANT 4.10 - ParFullCMS