Added forgotten NeutronKiller process, cleanup comments

[civanch]

Added extra method to access Geant4 process ID. Added forgotten NeutronKiller process to the list of known processes. Clean-up comments.

Back-ported already integrated into 7_2_X PR 4477.

[cmsbuild]

A new Pull Request was created by @civanch (Vladimir Ivantchenko) for CMSSW_7_1_X.

Added forgotten NeutronKiller process, cleanup comments

It involves the following packages:

SimG4Core/Physics

@cmsbuild, @civanch, @Degano, @mdhildreth, @nclopezo can you please review it and eventually sign? Thanks.
You can sign-off by replying to this message having '+1' in the first line of your reply.
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@nclopezo, @ktf you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[civanch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes or unless it breaks tests. @nclopezo, @ktf can you please take care of it?

[cmsbuild]

+1
Tested at: 2806182
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4493/1783/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4493/1783/summary.html