[VirtualBox/f28] (10 commits) ...Merge branch 'master' into f28

Summary of changes: c7b4a6a... Update to 6.0.2. (*) 6cf3564... Added asm volatile patch. (*) abba50b... Patch 61 might be useful on el7 (*) 1bc60c9... python3 on epel7 (*) 0cb8d42... Fix build of webservice (*) 8565859... Update VBox to 6.0.4 (*) e2ec092... - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass (*) b4086fc... minor changes (*) f840593... Rebase and squash f28 2cf0ca9... Merge branch 'master' into f28 (*) This commit already existed in another branch; no separate mail sent