- Rework MANIFEST generation and parsing via bsdinstall(8).
- Allow selecting debugging distribution sets during install.
- Rework bsdinstall(8) to fetch remote debug distribution sets
when they are not available on the local install medium.
- Allow selecting additional non-GENERIC kernels during install.
At present, GENERIC is still required, and installed by default.
Tested with: head@r293203
Sponsored by: The FreeBSD Foundation
8834318685