Sunset/disable some CI jobs to reduce CI load, speed up CI and drop support for obsolete platforms. Move some others to only master...
Sunset/disable some CI jobs to reduce CI load. Move some others to only master branch as I deem them unlikely to fail if others work.
gcc7 is direct replaced by gcc8 (both really obsolete these days) gcc7-default -> gcc10-default (same) gcc10 game/dyecmd only ... no need to test if these two special build options work on every ommit
Some special builders are made master-only pending further review.