[VirtualBox-kmod/f28] (6 commits) ...Merge branch 'master' into f28

Summary of changes: 9dfd45f... removed fixes_for_4.17.patch (*) 908ceed... Update to 5.2.24 (*) 40f66d7... Rebase and squash el7 (*) eb5dd49... Merge branch 'master' into el7 (*) 10f1806... Update of new vboxsf. (*) 3e77315... Merge branch 'master' into f28 (*) This commit already existed in another branch; no separate mail sent