Particle coordinate transformation in Particle-Matter Interaction - cherry pick from OPAL-1.6
Particle coordinates after interaction with matter are not properly updated in OPAL-2.0.2.
The issue was present in OPAL-1.6 (issue #92 (closed)), but solved with the commit dbe418d0.
The commit has been applied only to OPAL-1.6 and not to the master.