The command's help text says "Abandon a revision", which I think is a
good indication that the command's name should be `abandon`. This
patch renames the command and other user-facing occurrences of the
word. The remaining occurrences should be removed when I remove
support for evolution.
The table describes the simplified Git workflow of always using `git
commit -a`. With that workflow, you don't need to `git add` or `git
rm` to stage changes.
