Added Pythia8 status code for intermediate resonances to the GenJets particle selector

[ferencek]

Backport of #3272

[cmsbuild]

A new Pull Request was created by @ferencek (Dinko Ferencek) for CMSSW_7_0_X.

Added Pythia8 status code for intermediate resonances to the GenJets particle selector

It involves the following packages:

RecoJets/JetProducers

@nclopezo, @cmsbuild, @anton-a, @thspeer, @slava77, @Degano can you please review it and eventually sign? Thanks.
@yslai, @TaiSakuma, @nhanvtran this is something you requested to watch as well.
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-3273/124/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-3273/124/summary.html

[slava77]

+1

for #3273 3533cc0
tested in CMSSW_7_0_X_2014-04-22-0200
(test area sign704a in a combination of pulls 3165 3254 3273 3394)
including extended tests in few-K particle gun samples, few-hundred dijet, and ttbar with PU.
No regressions observed in monitored RECO quantities,
no differences in all harvested DQM plots for the extended tests (timing module jitter ignored).

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_0_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?