Further code review from the end of #2730

[lgray]

This is a technical PR that addresses code review points that arose in #2730.
No expected changed in physics output, timing for rechits should be improved.

@bachtis -- this covers most of the stuff you and Slava were discussing last night too

[cmsbuild]

A new Pull Request was created by @lgray (Lindsey Gray) for CMSSW_7_1_X.

Further code review from the end of #2730

It involves the following packages:

DataFormats/ParticleFlowReco
RecoParticleFlow/PFClusterProducer

@nclopezo, @cmsbuild, @anton-a, @thspeer, @slava77, @Degano 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.
You can reject by replying to this message having '-1' in the first line of your reply.
@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.

[slava77]

code seems ok, waiting for jenkins

[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2866/530/summary.html

[slava77]

+1

for #2866 b98d75b
based on code check and jenkins tests

[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?