In vmc/TMCProcess:

Restored backward compatibility by adding the explicit values to enum constants;
the recently added processes (kPCoulombScattering, kPPhotoNuclear,
kPUserDefined) have now values not used before.


git-svn-id: http://root.cern.ch/svn/root/trunk@35238 27541ba8-7e3a-0410-8455-c3a389f83636