Back-port of a set of fixes for the conddb core

[ggovi]

Fixes back-ported:

• remove of Root based serialization
• addition of CMSSW and boost serialization version information as payload metadata
• improved handling of exception in serialization/deserialization
• fix for condition overriding with toGet: support of '@' characters in sqlite file names (!)

[cmsbuild]

A new Pull Request was created by @ggovi for CMSSW_7_4_X.

Back-port of a set of fixes for the conddb core

It involves the following packages:

CondCore/CondDB

@ggovi, @cmsbuild can you please review it and eventually sign? Thanks.
@ghellwig, @apfeiffer1 this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[ggovi]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 19caf50
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11518/8432/summary.html

[ggovi]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_7_6_X is complete. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11518/8432/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_7_6_X is complete. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[ggovi]

@davidlange6
Hello David, this PR has been mentioned at the ORP last week. Is this ok for the approval?

[davidlange6]

+1