[VirtualBox-kmod/f26] (3 commits) ...Update to 5.2.12
Summary of changes:
23c3dbc... Start with jwrdegoede/vboxsf on Fedora 28 (*)
af1cf4b... if we use new vboxsf, we do not need build vboxguest neithe (*)
6b0d074... Update to 5.2.12 (*)
(*) This commit already existed in another branch; no separate mail sent