Merging branch 'j.2'  into 'main'.

See merge request !2517

Merging branch 'j.1'  into 'main'.

See merge request !2516

* Added a Python script to determine the wheel name via ‍‍`setuptools‍` ‍and removed the dummy C-code which was used as a 'hint' to `pip` to consider the Python wheel as a _platform-dependent_ wheel (instead of a pure-Python wheel).

* Restored `MANIFEST.in` file which is seemingly needed by `pip` under Windows to include the binaries.

* Removed unneeded zshell scripts which were used for making the Python package under MacOS.

* Added `wheel` to Python dependencies.

Merging branch 'a.setWheelName'  into 'main'.

See merge request !2514

See <https://stackoverflow.com/a/14159430>