FastSim: make matched hits aware of order of components (75X, BUGFIX)

[lveldere]

Fixes low efficiency for high purity tracks observed in validation of 750pre6, introduced in #9595

Expected changes:
FullSim: none
FastSim: increased tracking efficiency, especially for high purity

[lveldere]

please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

A new Pull Request was created by @lveldere for CMSSW_7_5_X.

FastSim: make matched hits aware of order of components (75X, BUGFIX)

It involves the following packages:

DataFormats/TrackerRecHit2D
FastSimulation/Tracking
FastSimulation/TrackingRecHitProducer

@civanch, @lveldere, @cvuosalo, @ssekmen, @mdhildreth, @cmsbuild, @slava77 can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @makortel, @VinInn, @gpetruc, @matt-komm 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.
If you are a L2 or a release manager you can ask for tests by saying 'please test' in the first line of a comment.
@Degano you are the release manager for this.
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[cmsbuild]

+1
Tested at: 41e67a1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10079/6013/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
2815b8a
9423baf
a81b281
79371cd
b919ca0
0bb1a0c
2fcaea4
7a8ff1c
6fab1b8
0156bbb
6c999d9
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10079/6013/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10079/6013/git-merge-result

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs once checked with relvals in the development release cycle of CMSSW (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs once checked with relvals in the development release cycle of CMSSW or unless it breaks tests. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[cmsbuild]

+1
Tested at: 41e67a1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10079/6079/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10079/6079/summary.html