Revert "DD: Current Namespace is a Singleton, so make it one"

[ianna]

Reverts #24401

Fix for CLANG IBs failures:

%MSG-e Specific:  OscarMTProducer:g4SimHits@beginRun 01-Sep-2018 07:18:26 CEST  Run: 1
Could not process q-name of a DDLogicalPart, reason:
DDLogicalPart-name "RT1C" matching regex "RT1C" has been found at least in following namespaces:
rpcf GLOBAL 
Qualify the name with a regexp for the namespace, i.e ".*:name-regexp" !
SpecPar selection is:
//RT1C

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-24464/6304

[ianna]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/30256/console Started: 2018/09/04 17:51

[cmsbuild]

A new Pull Request was created by @ianna (Ianna Osborne) for master.

It involves the following packages:

DetectorDescription/Core
DetectorDescription/Parser
Geometry/EcalCommonData
Geometry/EcalTestBeam
Geometry/HGCalCommonData
Geometry/HcalAlgo
Geometry/HcalTestBeamData
Geometry/MTCCTrackerCommonData
Geometry/MuonCommonData
Geometry/TrackerCommonData

@civanch, @Dr15Jones, @cvuosalo, @ianna, @mdhildreth, @cmsbuild, @kpedro88 can you please review it and eventually sign? Thanks.
@makortel, @VinInn, @ghugo83, @ptcox, @ebrondol, @argiro, @venturia this is something you requested to watch as well.
@davidlange6, @slava77, @fabiocos you are the release manager for this.

cms-bot commands are listed here

[cmsbuild]

+1
Tested at: e8e769a
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-24464/30256/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
d23b29e
dbbbce7
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-24464/30256/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-24464/30256/git-merge-result

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-24464/30256/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 32
• DQMHistoTests: Total histograms compared: 3143879
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3143681
• DQMHistoTests: Total skipped: 197
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 31 files compared)
• Checked 133 log files, 14 edm output root files, 32 DQM output files

[kpedro88]

+upgrade

[ianna]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master 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)

[ianna]

@fabiocos - please take it for pre3 if it's not too late. It should fix the CLANG IBs failures. Thanks.

[fabiocos]

+1