build: switch to upstream libdmg-hfsplus

Summary:

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.

Test Plan: Run the OSX Gitian build.

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D5654