[VirtualBox/f32] (9 commits) ...Update VBox to 6.1.10

Summary of changes: 0ff508c... Improve update_vbox.sh (*) 9a67a4b... Fix description for guest-additions on el7 (*) d390ad7... Fix for guest additions on EL7, now we use vboxservice.serv (*) 7a3307d... Add wildcard in gitignore (*) fd42811... Add VirtualBox-6.1.0-VBoxRem.patch rfbz #5652 Remove pre-co (*) 382840b... Rebuild for python-3.9 (*) 46960e3... Add python-3.9 support (*) 534430e... Fix build on EL8 (*) 2f1555a... Update VBox to 6.1.10 (*) (*) This commit already existed in another branch; no separate mail sent