Make sure that the both libqscintilla2_qt5.so and libqscintilla2.so are
present in `$out/lib` so all the dependant packages can find the most
appropriate library (some except the empty suffix, such as
sqlitebrowser, other expect the _qt5 suffix such as
python3Packages.qscintilla-qt5).

The mechanism would also work work for qt4 build, but it is broken at
the moment.

Also make sure python*Packages.qscintilla* are up to date

Fixes #70322

glib: fix loading dylibs through gobject on darwin

It doesn't support Python 3 and newer versions of libraries are Python 2-only.

It supports only Python 3 now.

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/python3.7-djangoql/versions

pythonPackages.ephem: 3.7.6.0 -> 3.7.7.0

Changes:

* Vectors.most_similar returns the top most similar vectors instead
  only one.
* Fixes tag map in Dutch model.
* Fix initialization of DocBin with attributes.

opera: use autoPatchelfHook, use wrapGAppsHook

qgis: 3.8.0 -> 3.8.3