fn restamp(rows: &mut [Row], stamped: &[(Rev, Digest)])Expand description
Give every row the hash its rev now has, and chain the file again.
A row that spends a rev stamps that rev’s own bytes; one that does not
— a tag — stamps the head it was appended under, which is the last rev
before it in the file. The same rule Store writes
rows under, read
off a file instead of a session.