Migrate More to New Random Service Interface

[wddgit]

Migrate some particle gun generator code
to use the new interface of the random number generator
service designed to work with the multithreaded Framework.
(I just inadvertently missed these in the previous
pull requests.)

[cmsbuild]

A new Pull Request was created by @wddgit (W. David Dagenhart) for CMSSW_7_1_X.

Migrate More to New Random Service Interface

It involves the following packages:

IOMC/ParticleGuns

@cmsbuild, @Degano, @Dr15Jones, @ktf, @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.

[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2751/387/summary.html

[Dr15Jones]

+1
@ktf Any idea why this needs a core signature and not generators?

[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?

[ktf]

Good question... It's the same in the old TC. @vciulli any objections to make it generators?

[vciulli]

@ktf: sure, no problem to make it generators

[ktf]

@Degano can you take care of this? thanks.