copies: directly pass a changes object to the copy tracing code...
copies: directly pass a changes object to the copy tracing code
The object contains all the data we need. For example, the `is_merged` callback
can now use the associated precomputed data.
This will be useful again soon when the `salvaged` set will be introduce to
solve the issue with delete file reverted during a merge. See
4b582a93316a and
14be07d5603c for details.
Differential Revision:
https://phab.mercurial-scm.org/D9117