Fixed use of zlib

See merge request gaudi/Gaudi!553

See GAUDI-1312

Fix a bug in data/condition object state detection in temporal and topological tracer's (3T) graph assembling

See merge request gaudi/Gaudi!543

See merge request gaudi/Gaudi!533

Adds a method to `IScheduler` to attach `EventViews` to the
`PrecedenceRulesGraph`, so that parts of the graph can be processed
multiple times per event (or skipped entirely).

No measurable performance impact for non-view workloads.

See:
- GAUDI-1306
- https://indico.cern.ch/event/632442/contributions/2718811/attachments/1526541/2387104/EventViews.pdf

- as `std::map` never invalidates pointers to values, there is no
  need to use `std::unique_ptr<Mutex_t>` instead of plain `Mutex_t`
  as value

See merge request gaudi/Gaudi!517

See merge request gaudi/Gaudi!512

Modernize constructors and destructors

See merge request gaudi/Gaudi!515

See merge request gaudi/Gaudi!456

See merge request gaudi/Gaudi!485

See merge request gaudi/Gaudi!490

See merge request gaudi/Gaudi!513

- remove destructors qualified with 'override = default'
- prefer inheriting constructors

... plus some formatting tweaks,

See merge request gaudi/Gaudi!519

See merge request gaudi/Gaudi!521

See merge request gaudi/Gaudi!522

See merge request gaudi/Gaudi!528

See merge request gaudi/Gaudi!516

See merge request gaudi/Gaudi!527

- remove redundant destructor
- prefer inherited constructor
- avoid std::shared_ptr, emplace actions into the queue
- prefer lambda over std::bind

- inherit from Algorithm instead of GaudiAlgorithm
- remove redundant initielize, destructor

Set the algorithm execution state/status (maintained by the
AlgExecStateSvc) in Algorithm::sysExecute. Clients calling sysExecute no
longer need to worry about setting this themselves (just like it used to
be in pre-GaudiHive times).