Minor fix for revert: No need to make a backup when forgetting added files.
echo foo > foo && hg add foo && hg revert foo
creates foo.orig, though foo is not changed or deleted.
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1 files, 1 changesets, 1 total revisions
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
verify failed
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
commit failed