fix includes and forward declarations

[civanch]

This Pr substitutes #19124, #19125, #19126

Added missing includes and forward declarations.
Remaining auto_ptr substituted by unique_ptr.
Should not affect results.

[cmsbuild]

A new Pull Request was created by @civanch (Vladimir Ivantchenko) for master.

It involves the following packages:

SimG4CMS/Forward
SimG4CMS/HcalTestBeam
SimG4Core/Physics

@cmsbuild, @civanch, @mdhildreth, @davidlange6 can you please review it and eventually sign? Thanks.
@makortel this is something you requested to watch as well.
@davidlange6 you are the release manager for this.

cms-bot commands are listed here

[civanch]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/20459/console Started: 2017/06/09 16:56

[cmsbuild]

+1
Tested at: d67277e
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-19170/20459/summary.html

[cmsbuild]

Comparison job queued.

[civanch]

+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 requires discussion in the ORP meeting before it's merged. @davidlange6, @smuzaffar

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-19170/20459/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 23
• DQMHistoTests: Total histograms compared: 1872255
• DQMHistoTests: Total failures: 5273
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 1866809
• DQMHistoTests: Total skipped: 173
• DQMHistoTests: Total Missing objects: 0
• Checked 94 log files, 14 edm output root files, 23 DQM output files

[davidlange6]

+1