[pygobject] (6 commits) Non-fast-forward update to branch wip/msvc

[Chun-wei Fan <fanchunwei src gnome org>]

The branch 'wip/msvc' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  e37c47c... gtk-demo.py: Allow running on Windows/x64
  85bab3f... Support MSVC builds of PyGObject-3.x

Commits added to the branch:

  54c623b... Handle multiple deinit of callable cache (*)
  8694e4d... Handle exception unreffing Variant at exit (*)
  222f558... overrides: Update for Gtk-4.0 (*)
  3f68e0a... Move pep8/pyflakes tests from 'make check' to 'make check.q (*)
  00f6e43... gtk-demo.py: Allow running on Windows/x64
  615019e... Support MSVC builds of PyGObject-3.x

(*) This commit already existed in another branch; no separate mail sent