updating PUPPI, 76x

[nhanvtran]

This is the companion to #10597 and #10551

[nhanvtran]

I started from 760_pre2, let me know if I need to start from an IB or another setup...

[cmsbuild]

A new Pull Request was created by @nhanvtran for CMSSW_7_6_X.

updating PUPPI, 76x

It involves the following packages:

CommonTools/PileupAlgos
DataFormats/PatCandidates
PhysicsTools/PatAlgos

@cmsbuild, @cvuosalo, @vadler, @monttj, @slava77 can you please review it and eventually sign? Thanks.
@rappoccio, @imarches, @ahinzmann, @acaudron, @mmarionncern, @jdolen, @schoef, @ferencek, @gpetruc, @mariadalfonso, @pvmulder, @TaiSakuma 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.
You can reject by replying to this message having '-1' in the first line of your reply.
If you are a L2 or a release manager you can ask for tests by saying 'please test' in the first line of a comment.
@Degano you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[slava77]

@nhanvtran
#10597 was auto-forward ported to 76X
your proposed changes in this PR are in conflict with 76X head

[slava77]

-1
resolve conflicts (or close if not needed)

[nhanvtran]

ah okay, I missed the auto-forward port. @slava77 sorry for the noise...