Use unique_ptr, not auto_ptr in RecoParticleFlow

[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 RecoParticleFlow 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:

RecoParticleFlow/Configuration
RecoParticleFlow/PFClusterProducer
RecoParticleFlow/PFClusterShapeProducer
RecoParticleFlow/PFProducer
RecoParticleFlow/PFSimProducer
RecoParticleFlow/PFTracking

@cmsbuild, @cvuosalo, @slava77, @davidlange6 can you please review it and eventually sign? Thanks.
@mmarionncern, @lgray, @rafaellopesdesa, @bachtis, @cbernet 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/15226/console

[cmsbuild]

+1
Tested at: eead168
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-15885/15226/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-15885/15226/summary.html

[cvuosalo]

+1

For #15885 eead168

Migrating deprecated auto_ptr to unique_ptr in RecoParticleFLow. There should be no change in monitored quantities.

The code changes are satisfactory, and Jenkins tests against baseline CMSSW_8_1_X_2016-09-16-1100 show no significant differences, as expected.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_1_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @smuzaffar

[davidlange6]

+1