```
Corys PRs (planetbeing/libdmg-hfsplus#7, planetbeing/libdmg-hfsplus#8)
have been merged, and the author was active for a little while in
2017/18, so switch back to the upstream libdmg-hfsplus repo. I've added
the last of Corys patches into depends.
```
Backport of core PR17057.
Depends on D5653.
The config.guess and config.sub scripts had no merge conflict.