So that it can merge things with an even more locked down master branch.
It's given the name "Marge Bot", and the E-mail
"gnome-shell-list@gnome.org" (even though it's being decomissioned) to
make validators happy.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1564
Add mutter.doap with the module description
Move the old MAINTAINERS to METACITY_MAINTAINERS
List Tomas and myself as the maintainers in MAINTAINERS and mutter.doap