add package Simulation/G4Sim/G4HiveEx

from ChangeLog:

2017-02-21 Steve Farrell <Steven.Farrell@cern.ch>
	* Added CLHEP header dependency to fix mysterious compilation failure.
	  This should be fixed properly later.
	* Tagging: G4HiveEx-00-03-20

2016-09-20 Steve Farrell <Steven.Farrell@cern.ch>
	* Removed V2 user action switch from G4HiveExOpts.py
	* Tagging: G4HiveEx-00-03-19

2016-08-02  Charles Leggett
	* Fixed CMakeLists.txt
	* tag G4HiveEx-00-03-18

M       CMakeLists.txt

2016-07-27 Steve Farrell <Steven.Farrell@cern.ch>
	* Removed the GPerfTools command line switch from G4HiveExOpts.py
	  since it doesn't fully work and one can instead use the gathena
	  command.
	* Tagging: G4HiveEx-00-03-17

2016-06-30 Steve Farrell <Steven.Farrell@cern.ch>
	* Added a command-line switch for setting evtMax.
	* Added support for GPerfTools enabled via command line switch.
	* Tagging: G4HiveEx-00-03-16

2016-05-31 Steve Farrell <Steven.Farrell@cern.ch>
	* Activated calorimeter in G4HiveExOpts.py
	* Manually filtering out all LAr SDs from config in G4HiveExOpts.py
	  because they are not yet thread-safe.
	* Tagging: G4HiveEx-00-03-15

2016-05-18 Steve Farrell <Steven.Farrell@cern.ch>
	* Activated magnetic field in G4HiveExOpts.py
	* Tagging: G4HiveEx-00-03-14

2016-05-06 Steve Farrell <Steven.Farrell@cern.ch>
	* Removed some unnecessary includes from G4InitTool
	* Tagging: G4HiveEx-00-03-13

2016-05-06 Andrea Di Simone
	* added G4 run termination in terminateThread

2016-05-02 Steve Farrell <Steven.Farrell@cern.ch>
	* Updated G4HiveExOpts.py to use BeamEffectsAlg
	* Tagging: G4HiveEx-00-03-12

2016-05-02 Steve Farrell <Steven.Farrell@cern.ch>
	* Dropped dependence on G4AtlasAlg by using G4WorkerRunManager base
	  class pointer instead of G4AtlasWorkerRunManager. See ATLASSIM-2772.
	* Did some minor cleanup of G4InitTool and requirements file.
	* Added CMakeLists.txt
	* Tagging: G4HiveEx-00-03-11

2016-02-22 Steve Farrell <Steven.Farrell@cern.ch>
	* Updated jobOpts for the new way to configure the MT user actions.
	* Turned on DetFlags.Truth, though the actual working MCTruth code
	  isn't fully ready yet.
	* Tagging: G4HiveEx-00-03-10

2015-10-08 Charles Leggett
	* update jobOpts for new style dependency declarations
	* no longer need G4InputLoader - should remove from repo
	* tag G4HiveEx-00-03-09

M       share/G4HiveExOpts.py

2015-10-03 Steve Farrell <Steven.Farrell@cern.ch>
	* Re-organized the job options and added some additional comments

2015-10-03 Steve Farrell <Steven.Farrell@cern.ch>
	* Simplified data dependency specification in G4HiveExOpts.py,
	  removing the dictionary and safety checks and just setting the
	  properties on the algos directly.
	* Tagging: G4HiveEx-00-03-08

2015-09-30 Steve Farrell <Steven.Farrell@cern.ch>
	* Updated the data dependency property name in G4HiveExOpts.py from
	  'Inputs' to 'ExtraInputs'.
	* Tagging: G4HiveEx-00-03-07

2015-09-15 Steve Farrell <Steven.Farrell@cern.ch>
	* Updated the data dependency specification mechanism in
	  G4HiveExOpts.py
	* Tagging: G4HiveEx-00-03-06

2015-07-17 Steve Farrell <Steven.Farrell@cern.ch>
	* Turned on muon system in G4HiveExOpts.py
	* Tagging: G4HiveEx-00-03-05

2015-07-03 Charles Leggett
	* fix oops.
	* tag G4HiveEx-00-03-04

M       share/G4HiveExOpts.py

2015-07-03 Charles Leggett
	* print error msg if don't use --threads= arg
	* tag G4HiveEx-00-03-03

M       share/G4HiveExOpts.py

2015-07-01 Charles Leggett
	* get rid of AthenaMPFlags.PreCountedEvents
	* tag G4HiveEx-00-03-02

M       share/G4HiveExOpts.py

2015-06-28 Steve Farrell <Steven.Farrell@cern.ch>
	* Updated EvtMax setting in JO so that "-1" works. There must be some
	  weird special handling of the flag due to its duplication in theApp
	  and in AthenaCommonFlags.
	* Tagging: G4HiveEx-00-03-01

2015-06-11 Charles Leggett
	* G4InitTool: now inherits from IThreadInitTool. no more thread
	  observers. activate with jobOpt ThreadPoolSvc.ThreadInitTools
	* tag G4HiveEx-00-03-00

M       share/G4HiveExOpts.py
M       src/G4InitTool.h
M       src/G4InitTool.cxx

2015-06-09 Steve Farrell <Steven.Farrell@cern.ch>
	* Disabled StreamHITS.AcceptAlgs in G4HiveExOpts.py
	* Tagging: G4HiveEx-00-02-06

2015-06-08 Steve Farrell <Steven.Farrell@cern.ch>
	* Merged in many hive developments
		* Updated G4InitTool for thread initialization.
		* Updated JO to use PyG4AtlasSvc
	* Tagging: G4HiveEx-00-02-05

2015-06-05 Charles Leggett
	* tweak jobOpts for AthenaCommon/ConcurrencyFlags.py
	* tag G4HiveEx-00-02-04

M       share/G4HiveExOpts.py

2015-06-04 Charles Leggett
      * don't need to add SGCommitAuditor in jobOpts as it's already done
      * tag G4HiveEx-00-02-03

M       share/G4HiveExOpts.py

2015-06-03 Charles Leggett
	* combined regular and hybrid jobOpts files
      * tag G4HiveEx-00-02-02

M       share/G4HiveExOpts.py
D       share/G4HiveExOpts_MPHive.py
M       ChangeLog

2015-06-03 Charles Leggett
	* updated G4HiveExOpts to use --threads command line opt
	* added G4HiveExOpt_MPHive.py for hybrid mp/mt
	* tag G4HiveEx-00-02-01

M       share/G4HiveExOpts.py
A       share/G4HiveExOpts_MPHive.py
M       ChangeLog

2015-05-05 Steve Farrell <Steven.Farrell@cern.ch>
	* Migrated JO to new thread service

2015-04-30: Charles Leggett
	* for GaudiHive v26r1 ITBBObserverTool -> IThreadObserverTool
	* tag G4HiveEx-00-02-00
	M       src/G4InitTool.h

2014-03-12: Charles Leggett
	* improving data dep registration in jobOpts
	* tag G4HiveEx-00-01-01
M       share/G4HiveExOpts.py

2015-03-12: Charles Leggett
	* added G4InitTool
	* added SGCommitAuditor
	* tag G4HiveEx-00-01-00

M       share/G4HiveExOpts.py
M       cmt/requirements
M       src/components/G4HiveEx_entries.cxx
A       src/G4InitTool.h
A       src/G4InitTool.cxx

2015-01-15: Charles Leggett
	* initial import
	* tag G4HiveEx-00-00-00

Former-commit-id: 4ee8f436