updates clhep to v2.3.4.2

[iahmad-khan]

cms-externals/clhep#3

[cmsbuild]

A new Pull Request was created by @iahmad-khan (Ijaz ahmad khan) for branch IB/CMSSW_9_0_X/gcc530.

@cmsbuild, @smuzaffar, @iahmad-khan, @davidlange6 can you please review it and eventually sign? Thanks.
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[iahmad-khan]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/cmsdist-test-pr/435/console

[cmsbuild]

+1
Tested at: ab788c3
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2711/435/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2711/435/summary.html

The workflows 1003.0, 1001.0, 1000.0, 140.53, 136.731, 4.22 have different files in step1_dasquery.log than the ones found in the baseline. You may want to check and retrigger the tests if necessary. You can check it in the "files" directory in the results of the comparisons