Package only contains one testing algorithm used during early L1Topo
developments.

TrigNavigation+TrigNavStructure+TrigSerializeCnvSvc: Race fixes.

See merge request !43270

Support tweaking and monitoring concurrency in overlay tests

See merge request !43248

Merge branch 'TrackingGeometryCondAlg_master_ensure_detector_element_cond_data_is_created' into 'master'

Fix missing detector element conditions data when building the tracking geoemtry.

See merge request !43265

Extended event context retrieval fix in HepMcParticleLink

Closes ATLASSIM-5123

See merge request atlas/athena!43263

tauRecTools: improve element link handling and fix charged PFO usage in substructure reconstruction

See merge request !43257

adding weights to InDetMonitoring resolution plots

See merge request !43110

LArRawConditions+LArRecUtils: Fix cppcheck warnings.

See merge request !43278

TGC_CondCabling+DataModelAthenaPool: Fix cppcheck warning.

See merge request !43275

LArElecCalib: Remove ILArADC2MeVTool.

See merge request !43273

LArCalibUtils: Fix cppcheck warnings.

See merge request !43183

Potential null pointer dereference.
Suppress duplicate assignment false positive.

Don't pass large objects by value.

Prefer using preincrement for iterator classes.

Redundant string conversion.

Remove obsolete/unused ILArADC2MeVTool.

Give an error if we try to deserialize something that's already in StoreGate
rather than using overwrite (except for TrigRoiDescriptorCollection).
Calling overwrite() is liable to corrupt ElementLinks.

See ATLASRECTS-6278 and ATEAM-734.

Change TrigNavStructure::m_rmutex to be a static member, as we can potentially 
have several instances of this class that we want to lock against each other.

See ATLASRECTS-6278 and ATEAM-734.

Skip deserializing a blob if we've already seen it.

See ATLASRECTS-6278 and ATEAM-734.

Ensure that detector element conditions algorithms are scheduled when adding the tracking geometry conditions alg.

CaloJiveXML: Use SG::ConstIterator instead of DataHandle.

See merge request atlas/athena!43177

Hello,

This MR implements Attila's suggestion to improve the handling of element links in the tau substructure reconstruction code (ATLASRECTS-6278).
The detailed explanation can be found [here](https://its.cern.ch/jira/browse/ATLASRECTS-6278?focusedCommentId=3814470&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-3814470) .
The links are only used at reconstruction time, to associate various PFO types and run the substructure reconstruction.
Probably, nobody ever checked whether the links were valid after they are written to AODs (and we don't write out charged PFOs anymore, which does not help), to be done soon.
This part of the MR does not change the reconstruction output.

The MR also fixes which charged PFOs (i.e. tau tracks) are used in the tau substructure reconstruction and shower subtraction.
When we reconstruct a tau, we push its tracks in a charged PFO container, so the container is growing as we process more taus.
And currently, in the shower subtraction procedure, for a given tau, we consider all the PFOs from the charged PFO container, which includes tracks from previous taus, instead of using only tracks of the current tau.
It introduces a dependency on taus reconstructed upstream in the event, but this is not a bug in itself, a good track from a previous tau is a good track, and it would make sense to consider it when subtracting charged PFOs from neutral PFOs.
However, rightfully using a track from another tau seems very rare (I saw 1 case in 2000 ttbar events).
So I am replacing the loop over all charged PFOs in the container with a loop over the charged PFOs associated with the current tau.
For completeness: with this change, we fix a very [subtle bug](https://gitlab.cern.ch/atlas/athena/-/blob/ceb26b77eb2b93b1de003b52872ae20db008339f/Reconstruction/tauRecTools/src/TauPi0ClusterScaler.cxx#L192).
`dR < dRmin` should have been `dR <= dRmin`, otherwise, in case a same track is shared by tau1 and tau2, we will create chargedPFO1 when processing tau1, then chargedPFO2 when processing tau2, and in the loop over charged PFOs, we would select chargedPFO1 for tau2, as it comes first in the container, which causes some mess downstream...

Cheers,
Bertrand

egammaTrackSlimmer: keep all TRT-only tracks

See merge request !43237

Add conversion for multiple chains in Run 2 to run 3 Nav decoder

See merge request !43159

Make LArFebErrorSummaryMaker reentrant

See merge request !43165

Fix wrong timings container in the digitisation

Closes ATLASSIM-5236

See merge request !43188

Tidy up the fast electron and photon hypo tools

See merge request !43122

TrigValSteering - protect against zero exec_steps when preparing exec_summary

See merge request !43196

MuonTruthAlgs: Remove unnecessary variable and fix print-out

See merge request !43211

Cleanup egamma: remove egamma covariance matrix

See merge request !43223