update config tag; added multi-vec and root flags

[cmsbuild]

backport of #5827

New build rules

• Drop Capabilities support
• Add vectorization support, one can set SCRAM_VECTORIZE in self.xml to add the supported vectorization builds. The compiler cxxcompiler tool CXXFLAGS_VECTORIZE_<VEC_FLAG> to provide the extra flags to be used for vectorizations.
• Merge cxxmodules changes from V05-09-XX tags
• Drop Python wrapper build rules (not used since many years)
• Allow to use different compiler to build a product. One can set

<flag COMPILER="llvm"/>

in the BuildFile.xml to use llvm compiler to build the product.

[cmsbuild]

A new Pull Request was created by @cmsbuild for branch IB/CMSSW_11_2_X/master.

@cmsbuild, @smuzaffar, @mrodozov, @tulamor can you please review it and eventually sign? Thanks.
cms-bot commands are listed here

• Backported from update config tag; added multi-vec and root flags #5827

[smuzaffar]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/6552/console Started: 2020/05/24 20:15

[cmsbuild]

Pull request #5854 was updated.

[cmsbuild]

+1
Tested at: 6d3c80f
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a69627/6552/summary.html
CMSSW: CMSSW_11_2_X_2020-05-24-0000
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a69627/6552/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 36
• DQMHistoTests: Total histograms compared: 2780792
• DQMHistoTests: Total failures: 17
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2780725
• DQMHistoTests: Total skipped: 50
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 35 files compared)
• Checked 152 log files, 16 edm output root files, 36 DQM output files

[smuzaffar]

+externals

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_11_2_X/master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo (and backports should be raised in the release meeting by the corresponding L2)