migrate G4EmProcessOptions.hh to G4EmParameters.hh

Migration to use directly G4EmParameters instead of G4EmProcessOptions as advised by Geant4 people.

It is potentially a breaking change because it merges two properties of hysicsListToolBase into one. This was advised decided upon discussion in ATLASSIM-3967.

With a LXR search only one client using these properties was found and the settings were commented out. This MR adds an additional comment as a warning.

This merge request affects 2 packages:

• Simulation/G4Atlas/G4AtlasTools
• Simulation/G4Utilities/G4PhysicsLists

Adding @jchapman ,@vpascuzz as watchers

added Simulation master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-20837-2019-02-01-23-24
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
CI Jenkins server is switched to https://atlas-sit-ci.cern.ch. It is accessible world-wide (behind CERN SSO). In old links to Jenkins server aibuild080.cern.ch:8080 should be replaced with atlas-sit-ci.cern.ch For experts only: Jenkins output [CI-MERGE-REQUEST 33177]

resolved all discussions

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit b6440c58

added sweep:ignore label