change mirror and keyword macos

Package-Manager: portage-2.2.10
change mirror

Package-Manager: portage-2.2.10
change mirror

Package-Manager: portage-2.2.10
change mirror

Package-Manager: portage-2.2.10
bump EAPI and add macos keywords

Package-Manager: portage-2.2.10
change mirror

Package-Manager: portage-2.2.10
Add a sageupstream mirror