use unique_ptr, not auto_ptr, in PhysicsTools packages

[wmtan]

In preparation for removing framework support for deprecated auto_ptr arguments in put() calls, this pull request replaces the use of auto_ptr with unique_ptr in PhysicsTools packages. Also, std::make_unique is used when appropriate.

[cmsbuild]

A new Pull Request was created by @wmtan for CMSSW_8_1_X.

It involves the following packages:

PhysicsTools/CandAlgos
PhysicsTools/HepMCCandAlgos
PhysicsTools/IsolationAlgos
PhysicsTools/JetCharge
PhysicsTools/JetMCAlgos
PhysicsTools/PatAlgos
PhysicsTools/PatExamples
PhysicsTools/PatUtils
PhysicsTools/RecoAlgos
PhysicsTools/SelectorUtils
PhysicsTools/TagAndProbe
PhysicsTools/UtilAlgos

@cmsbuild, @cvuosalo, @slava77, @montjj, @davidlange6 can you please review it and eventually sign? Thanks.
@TaiSakuma, @imarches, @ahinzmann, @acaudron, @mmarionncern, @rappoccio, @jdolen, @nhanvtran, @gpetruc, @schoef, @ferencek, @mverzett, @mariadalfonso, @pvmulder, @JyothsnaKomaragiri this is something you requested to watch as well.
@slava77, @smuzaffar you are the release manager for this.

cms-bot commands are list here #13028

[wmtan]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/14597/console

[cmsbuild]

+1
Tested at: 42945c4
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-15522/14597/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-15522/14597/summary.html

[cvuosalo]

+1

For #15522 42945c4

PhysicsTools migration of deprecated auto_ptr to unique_ptr. There should be no change in run-time behavior.

The code changes are satisfactory, and Jenkins tests against baseline CMSSW_8_1_X_2016-08-18-2300 show no significant differences, as expected.