See merge request gaudi/Gaudi!1717

See merge request !1716

See merge request gaudi/Gaudi!1714

Note that this is not a proper fix but rather a workaround.
It seems that this version of local_valgrind is outdated and not able to properly detect modern ARM platform.
Besides one could wonder why we have to replicate a header from valgrind here.

Closes #344

See merge request !1715

See merge request gaudi/Gaudi!1705

Modify ServiceHandle to fall back on dynamic_cast if the template
argument is not an abstract interface. This is similar to the way
ToolHandle works for concrete tools.

This also adds the new header Gaudi/Concepts.h to host C++20 concepts of
common utility, starting from Gaudi::IsInterface<T>.

Closes #357

See merge request gaudi/Gaudi!1708

Closes #354

See merge request gaudi/Gaudi!1713

See merge request !1711

See merge request !1707

See merge request !1704

See merge request !1703

See merge request !1706

See merge request !1700

See merge request !1701

patch generated by https://gitlab.cern.ch/jcarcell/Gaudi/-/jobs/52630371

Histograming/Sink/Utils.h: Truncate histogram name as required during printout with central ellipsis

Retrieving the class name to a CLID requires querying the `ClassIDSvc`,
which (at least in the ATLAS implementation) requires taking a lock
during the lookup and in general might be a costly operation. Instead of
doing this in the construction of `DataObjID` only lookup the
class name when needed and then cache the result.

Also cleanup the needlessly complicated code of one-time retrieval of
ClassIDSvc by using a simple static.

This fixes some performance problems in multi-threaded ATLAS
jobs (ATEAM-1054).

See merge request !1699