```
emulators/virtualbox-ose: switch build over to devel/llvm10
In r531039, brooks@ committed a patch to devel/llvm10 that makes it viable
to build VirtualBox with LLVM 10. This patch specifically reverts the commit
between LLVM 7 and LLVM 8 that caused VirtualBox to regress and segfault
when attempting to create new VMs.
Work is underway to diagnose where compilation went wrong and address it in
a more complete matter,
PR: 236616, 244847
Approved by: koobs (mentor)
MFH: 2020Q2
```