Changed the messages output by Histograming::Sink::Base and RootHistCnv::PersSvc to make using the Sink output a better log file.

Fix a few conversion warnings that show up when compiling the code with
`-Wconversion`. The goal was not to make the code compile without
warnings, but rather reduce the "noise" as much as possible when
compiling client code against Gaudi headers.

Marco Clemencic authored 4 years ago and Charles Leggett committed 4 years ago

- added minimal interface `Gaudi::Interfaces::IOptionsSvc`
- reimplemented `IJobOptionsSvc` methods using the new interface methods
  (`set`, `get` and `has`)
- deprecated `IJobOptionsSvc` methods

Gitlab CI authored 6 years ago and Marco Clemencic committed 6 years ago

patch generated by standalone job

- prefer CommonMessaging when available
- add generic visit to downcast INTupleItem to concrete type and
  invoke the provided callable, and use that to dispatch lambdas
  instead of explicit switch statements with almost identical function
  calls
- use boost::string_ref to avoid copying strings more than strictly
  required
- prefer direct member initialization

- `class NTUPLEINFO` only appears as argument in the declaration of a
  templated function which is not defined

- require public constructor for components
- removed XyzFactory classes
- enabled warning for XyzFactory headers
- some clean up and modernization

- and some minor format tweaking

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

... plus some formatting tweaks,

migrated JobOptionsSvc, GaudiGS, GaudiMP, GaudiMTTools, GaudiUtils, PartPropSvc and RootHistCnv to new property declaration

getProperty(string,string) conflicts with an IProperty method

Allow retrieval of single properties from `JobOptionsSvc`.

Also removed the need of `PropertyMgr` in `RFileCnv`.

Changed PropertyMgr to allow to use it to implement IProperty interface via
multiple inheritance.

For example:

    ```.cpp
    class Algorithm: public implements<IProperty, INamedInterface, ...>,
                    public PropertyMgr {  // implements IProperty
      ...
    };
    ```

Changing from composition to (multiple) inheritance allowed removal of ~200
lines of code.

Works.
Not final version.

   - prefer nullptr
   - prefer auto
   - avoid comparing pointers to 0