The distribute python package is now in LCG releases - they have a newer
version and it generates a conflict with ours when installing flake8 package

Add missing find_package statement for pytools to PyUtils package

See merge request !4770

Sweeping !4501 from 21.0 to master.
PixelMonitoring: fixed memory leaks and some other improvements

See merge request !4683

Sweeping !4536 from 21.0 to master.
Merge branch 'AddLArPEBStreamingOption' into '21.1' -- push to 21.0

See merge request !4687

Sweeping !4624 from 21.0 to master.
Adding simple script checking event counts and sizes of derived formats made at Tier-0

See merge request !4689

AthenaKernel: Enable thread-safety checking.

See merge request !4720

Sweeping !4003 from 21.0 to master.
Adding New Small Wheel HitAnalysis classes

See merge request !4726

Sweeping !4675 from 21.0 to master.
CfgGetter syntax fixes for Charginos and Gauginos packages

See merge request !4728

Sweeping !4604 from 21.0 to master.
Adding newSuppressions.supp to Tools/ValgrindRTTJobs that was missing (ATEAM-406)

See merge request !4730

Lower the priority of STACO muons

See merge request !4753

The `PyUtils` package makes use of `pytools`, but the package
`CMakeLists.txt` file does not explicitly call `find_package( pytools )`.
Instead it relies on the calls in `DataQuality/DQDefects` and
`DataQuality/DQUtils`, so currently all projects which don't include
either of these packages are broken in `master`. This should fix
ATEAM-427.

EventView may default to StoreGate

See merge request !4763

migrated new-skeleton functionality to master branch

See merge request !4764

AthExHive: use initializer list syntax for Properties

See merge request !4766

Allow setting and printing of ROOT Domain attributes for Input.

See merge request !4343

Sweeping !4623 from 21.0 to master.
Fix minor build warnings in build of HitAnalysis package

See merge request !4688

MdtCalibDbCoolStrTool: Removing references to transientAddress().

See merge request !4697

AthenaRootComps: Remove some obsolete classes.

See merge request !4721

DerivationFrameworkInDet: Pass large arguments by const reference instead of by value.

See merge request !4725

DetDescrCondTPCnv: Suppress  undefined behavior sanitizer warnings.

See merge request !4734

CaloRingerAlgs: Protect against crash on missing meta item list.

See merge request !4735

EventLoopTest: Fix ATN test failures.

See merge request !4736

SiCombinatorialTrackFinderTool_xk: Fix uninitialized VarHandleKeys.

See merge request !4737

TauAnalysisTools: Fix clang warning.

See merge request !4738

TrigEgammaHypo: const fix.

See merge request !4743

TestTools: Don't warn about missing reference files for gtest-like tests.

See merge request !4749

ALFA_Geometry: Remove unused static class member.

See merge request !4750

Externals Update, master branch (2017.09.18.)

See merge request !4759

AthenaMonitoring: const fix.

See merge request !4754

latest externals/LCG code this happens automatically out of the box.

DataModelRunTests: A few more patterns to ignore.

See merge request !4698

migrate to new method of declaring ReadHandles and Properties and add monitoring

See merge request !4712

As the STACO algorithm is currently not	well tuned, it produces	mostly fakes.
This update lowers its priority	so that	muons (if any) reconstructed from the same ID candidate by the segment- or calo-tag algs are used instead.
In this	case, the MS track used by the STACO reconstruction will be reconstructed as a standalone muon,	so no information is lost.

DataVector<T>::value_type is T*.
But we need the converter functions to take  a const T*.
Update to add this const qualifier.

Remove unused static class member (that also violates ATLAS naming conventions).