[ROOT] Update root 6.14

[smuzaffar]

back-port root changes from Ib/CMSSW_10_6_X/rootnext branch.

[smuzaffar]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/44/console Started: 2019/05/07 11:49

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_10_6_X/gcc700.

@cmsbuild, @smuzaffar, @gudrutis, @mrodozov 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.

[cmsbuild]

+1
Tested at: 11f4f92
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4968a3/44/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4968a3/44/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 33
• DQMHistoTests: Total histograms compared: 3211964
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3211759
• DQMHistoTests: Total skipped: 204
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 32 files compared)
• Checked 137 log files, 14 edm output root files, 33 DQM output files

[smuzaffar]

+externals
@fabiocos , all looks good for root 6.14. When ever you have green light from validation then please merge it.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_10_6_X/gcc700 IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @davidlange6, @slava77, @smuzaffar, @fabiocos (and backports should be raised in the release meeting by the corresponding L2)

[fabiocos]

+1

[fabiocos]

@smuzaffar let's leave next IB just for this, we have used it for months so it is mostly to have a clean reference than because we expect surprises