test-copies: show some wrong ChangedFiles upgrade
For file present only on one side and touched during merge, the upgrade code
confused them as "merged". However they should be either "touched", or
"salvaged" but they are currently recorded as "merged". See the next changesets
for more details on these cases and fix.
Differential Revision: https://phab.mercurial-scm.org/D10218
edition = "2018"
max_width = 79
wrap_comments = true
error_on_line_overflow = true