[VirtualBox-kmod/el7] (6 commits) ...Update VBox to 5.1.20, security fixes

Summary of changes: 760a61d... Applied lnkops.patch for kernel-4.10.0-0.rc5 (*) 52fe386... Applied upstream patch for kernel-4.10.0-0.rc5 (*) 9546f5f... Update VirtualBox-kmod to 5.1.16 (*) c9d227b... Update VirtualBox to 5.1.18 (*) 7370e32... - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass (*) 27388d7... Update VBox to 5.1.20, security fixes (*) (*) This commit already existed in another branch; no separate mail sent