Make sure the changelog mentions files whose flags changed
These changes don't actually need a new filelog entry (see next patch),
but if we don't mention the files in the changelog, it becomes much
harder to find all changesets that touch a file (not even a
"hg log --removed file" will work).
*** failed to import extension badext: bit bucket overflow
extension 'hgext.gpg' overrides commands: sigs sigcheck sign
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