trim hep top tagger combinatorics

[slava77]

somewhat arbitrary limit on the number of top tag candidates to 32768; the same as #8330
This was confirmed by Jim as OK in #8330
Here I'm propagating just the combinatorics trimming; the HEPTopTagger is not running in standard workflows in this release.

[cmsbuild]

A new Pull Request was created by @slava77 (Slava Krutelyov) for CMSSW_7_4_X.

trim hep top tagger combinatorics

It involves the following packages:

RecoJets/JetAlgorithms

@cmsbuild, @cvuosalo, @nclopezo, @slava77 can you please review it and eventually sign? Thanks.
@rappoccio, @ahinzmann, @TaiSakuma, @jdolen, @nhanvtran, @schoef, @mariadalfonso this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 09fb8ca
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8344/3/summary.html

[slava77]

+1

for #8344 09fb8ca
tested as a part of #8330 preparation using beam splash events

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @ktf, @smuzaffar

[davidlange6]

+1