Mixing execute base cmssw 7 1

[franzoni]

• call methods of BMixingModule for lumi/run X begin/end transition, from within the same methods of inheriting MixingModule
• necessary to configure mixing module from db

[cmsbuild]

A new Pull Request was created by @franzoni for CMSSW_7_1_X.

Mixing execute base cmssw 7 1

It involves the following packages:

Configuration/StandardSequences
SimGeneral/MixingModule

@civanch, @nclopezo, @vlimant, @mdhildreth, @cmsbuild, @franzoni, @Degano, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @wmtan, @GiacomoSguazzoni, @rovere, @VinInn, @cerati this is something you requested to watch as well.
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.
@nclopezo, @ktf you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[cmsbuild]

+1
Tested at: f985c69
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4984/1890/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-4984/1890/summary.html

[mdhildreth]

+1

[franzoni]

+1
things work when testing the usage of one workflow with db-based mixing configuration

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?