Migration from GeoModelKernelUnits to Gaudi::Units in three GeoModel packages

See merge request atlas/athena!20416

HIJetRec: Give an error if HISubtractedCellMaker is used in a MT job.

See merge request atlas/athena!20437

TrigEgammaMuonCombHypo: Fix compilation warning.

See merge request atlas/athena!20436

TrigBphysHypo: Fix compilation warnings.

See merge request atlas/athena!20435

FTK_RecTools: Fix clang warnings.

See merge request atlas/athena!20434

TrigT1TGC: Comply with ATLAS naming conventions.

See merge request atlas/athena!20433

xAODCore: Thread safety fixes.

See merge request atlas/athena!20426

StoreGate: Disable overlap check in WriteCondHandle.

See merge request atlas/athena!20425

AthenaKernel: Avoid thread-safety checker warning.

See merge request atlas/athena!20424

update Gaudi to v31r0.001

See merge request atlas/athena!20414

Write BS with trigger EDM

See merge request atlas/athena!20406

deprecate TAccept and related interfaces

See merge request atlas/athena!20398

Mhodgkin update cal hits dec18

See merge request atlas/athena!20392

TrigHIHypo: Preparing HICaloCellCorectionTool to be const.

See merge request atlas/athena!20438

Remove CURL, master branch (2019.01.18.)

See merge request atlas/athena!20440

Integrate ID with New JO

See merge request atlas/athena!20173

Fix for post dec hackaton crash in ART tau trigger test

See merge request atlas/athena!20380

TrigEgammaEmulationTool: cmake fixes

See merge request atlas/athena!20428

TrigMultiVarHypo: cmake fix

See merge request atlas/athena!20427

The package probably did use CURL at one point of its file, but it doesn't
use it by now. So there's no need for it to set it up for its build.

Preparing to make ICaloCellMaker::process() const, so that it can be
used reentrantly.
HICaloCellCorectionTool [sic] was storing event information in a couple
member variables; however, this is easily removed with a slight
reorganization.  Also change to using a ReadHandle to access
StoreGate.

This is in preparation for making ICaloCellMakerTool::process const,
for use in MT.  This particular tool hasn't been converted to work
reentrantly, so give an error if someone attempts to do that.

Compilation warning: obsolete Gaudi header.

Compilation warnings:
  - Unused variable (comment out, since there are references to it
    in existing commented-out code;
  - Remove #include of obsolete Gaudi header.

clang warnings: missing override keyword, braces in initializers, unused function.

Private data members should start with m_; non-members should not.

Missing dependency on PathResolver.
Don't use ROOT macros with no corresponding find_package.

Missing dependency declaration on DecisionHandling.

Enable thread-safety checker for this package; fix problems that
it identified.

Disable overlap check in WriteCondHandle until caching issues
with IOVDbSvc are sorted out.

cf ATEAM-497.

Declare some classes as ATLAS_NOT_THREAD_SAFE to avoid thread-safety
checker warning.  They are indeed not MT-safe.

Three packages have been migrated: GeoModelSvc, GeoModelUtilities and GeoModelExamples.
The only exception from this migration is GeoModelKernelUnits::gram, because the migration
to Gaudi::Units::gram changes the output of simulation jobs. The reason for that is the
difference between definitions of e_SI constant in GeoModel/CLHEP and Gaudi

Migrate SCT_DigitizationTool to use IAtRNGSvc for AthenaMT

See merge request atlas/athena!20291

Overlay: Copy TrackRecordCollection and CaloCalibrationHitContainer (ATLASSIM-3911, ATLASSIM-3917)

See merge request atlas/athena!20250

TAccept is not multi-threading safe and there is a replacement, so
let's go with it.

SCT RDO updates to reduce size for overlay MC (ATLASSIM-3903)

See merge request atlas/athena!20213