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

See merge request atlas/athena!20213

Update master to use HepMcParticleLink_p2 by default

See merge request atlas/athena!20197

New style python configuration for RngComps and BCM_Digitization

See merge request atlas/athena!20306

Fix the problem fo the multiple record in PixelByteStreamErrorsSvc (ATLASRECTS-4020)

See merge request atlas/athena!20315

Sweeping !20318 from 21.3 to master. Update art-include in TriggerTest

See merge request atlas/athena!20366

Add EF combined muons to trigger tests (ATR-17553)

See merge request atlas/athena!20369

Change retrieval to avoid upsetting rest of DQ code (ATLASRECTS-4809)

Closes ATLASRECTS-4809

See merge request atlas/athena!20379

Sweeping !20324 from 21.3 to master.
TriggerTest: add a few tests running on data

See merge request atlas/athena!20363

Sweeping !20329 from 21.1 to master.
Fix hang due to unfortunate convergence of input settings

See merge request atlas/athena!20357

change the format of the TrigInDetSequence args to be able to pass a

See merge request atlas/athena!20342

re-enabled ringer, fixed monitoring

See merge request atlas/athena!20295

Minor updates for muon menu test

See merge request atlas/athena!20229

Externals Update, master branch (2019.01.15.)

Closes ATLINFR-2871

See merge request atlas/athena!20377

Since I removed the handling of -d already in the previous commits, this
would've just lead to quite undefined behaviour when somebody tried to
use -d with this script.

TileConditions: A few optimizations.

See merge request atlas/athena!20349

FTK_RecTools: cmake fix

See merge request atlas/athena!20350

MET trigger hypo, ctest, and menu interface

See merge request atlas/athena!20092

ATR-19003 Pseudomerge of B-Phys/LS trigger packages from 21.0-TrigMC to master

See merge request atlas/athena!20314

Simplification of HLT CF naming conventions to allow further cleanup and reductions

See merge request atlas/athena!20261

AthAnalysisBaseComps: Pick some AAH::setProperty changes from 21.2.

See merge request atlas/athena!20268

SGComps: Make SGInputLoader output predictable.

See merge request atlas/athena!20303

xAODCutFlow: Fix gcc9 warnings.

See merge request atlas/athena!20352

JetMomentTools: Comply with ATLAS naming conventions.

See merge request atlas/athena!20351

TrkAlgebraUtils: Comply with ATLAS naming conventions.

See merge request atlas/athena!20354

ParticleEvent: Fix gcc9 warnings.

See merge request atlas/athena!20355

LumiBlockPers: Fix gcc9 warnings.

See merge request atlas/athena!20353

Fix acts removed headers

See merge request atlas/athena!20376

The latest version of atlasexternals now defaults to using LCG_94a. But until
the tdaq releases are built against 94a, Athena needs to stay with 94.

This is to allow us passing multiple extra arguments to CMake through the build
scripts. The formalism is that the -x argument of all build scripts can be
specified multiple times. Resulting in each value passed to -x being taken
into account.

At the same time removed the git version checking from the build scripts,
as it was not needed for anything for a while now.

Finally, took the opportunity to do some general cleanup as well.