This package has a component library, but it also exports headers.
Define an interface library for the headers.

Library dependency fixes.

RootUtils: Fix cppcheck warning.

See merge request atlas/athena!32580

CxxUtils: Add a helper to start playing with C++20 concepts.

See merge request atlas/athena!32579

CaloIdentifier: Add command-line utility to translate cell hashes.

See merge request atlas/athena!32578

CaloConditions: Additions to ToolConstants.

See merge request atlas/athena!32576

McEventSelector: Allow passing extra arguments to McEventSelectorCfg.

See merge request atlas/athena!32575

Fix truth handling in InDetPhysValMonitoring tool with hard scatter flag set

See merge request atlas/athena!32544

Misplaced #endif.

Add header concepts.h with an ATH_REQUIRES macro, to hide a requires clause
from compilers that don't support concepts.

Add a simple command-line utility to translate cell ID hashes
into something readable.

Add ToolConstants::toString().
Allow ToolConstants::setrep to take the payload via move.

Allow passing extra keyword arguments to McEventSelectorCfg,
to allow configuring things like how often the geneated LBN changes.

ATLASRECTS-5428 : Removed leftover flag in RungeKuttaProp - useCondObj. This messed up InDetPatterRec

See merge request atlas/athena!32569

AthViews+TrigT1NSWSimTools: cmake fixes

See merge request atlas/athena!32561

AthenaPoolExampleConverter+AFP_ByteStream2RawCnv: cmake fixes

See merge request atlas/athena!32525

MuonDigToolInterfaces+MuonRegionSelector+TrackRecord: cmake fixes

See merge request atlas/athena!32526

FastCaloSimAthenaPool: cmake fixes

See merge request atlas/athena!32558

TrigEDMConfig: python 3 fix

See merge request atlas/athena!32550

MuonCondCabling: Make sure RDOindex is initialized.

See merge request atlas/athena!32551

TrackD3PDMaker: Remove references to undefined variables.

See merge request atlas/athena!32552

DerivationFrameworkMuons: Python 3 / flake8 fixes.

See merge request atlas/athena!32554

TrigPSC: Fix compilation warning with py3.7.

See merge request atlas/athena!32555

InDetPhysValMonitoring: Fix clang warnings.

See merge request atlas/athena!32556

TrigEgammaMatchingTool: Fix clang warnings.

See merge request atlas/athena!32557

LUCID_G4_SD: cmake fixes

Closes LUCID_G4_SD-20200501

See merge request atlas/athena!32559

TrkEventTPCnv: cmake fixes

See merge request atlas/athena!32560

add CalibHitToCaloCellTool

See merge request atlas/athena!32304

Temporarily comment jet chain to address ATR-21327

See merge request atlas/athena!32527

Library dependency fixes.

Don't build the same objects into multiple libraries.

Library dependency fixes.

Don't build objects into more than one library.
Instead, the component library should depend on the non-component library.

Don't build the same sources into more than one library.

Missing override keywords.

Unused private data members.  (A couple left commented-out for documentation
purposes.)

As of python 3.7, PyOS_AfterFork is replaced by PyOS_AfterFork_Child.

Re-apply python 3 fixes clobbered by previous change.
Enable flake8 checking for the python directory and fix warnings.

NextToInnermost / DBMHits variables are no longer always available.
Remove references to them.