This vendors backups extension from hg-experimental.
Listing backups and having some utility to apply them is nice. I know we have
obsmarkers now, but this will help a lot of end users who still uses strip until
we get evolve out of experimental.
I'm +1 on having this functionality in core, FYI.
Can we call it debugbackupbundle for clarify?
I think I'd prefer debugbackupbundle per marmoute's suggestion.