The diff shown by p4-revert now uses p4-diff-mode.
Fixes #97.
Set key "g" to revert-buffer in p4-diff-mode.
Highlight "updating" lines in the output of sync/update/flush.
Give p4-update the "g" key binding (swap with p4-get-client-name).
Update is a much more important operation than getting the client name.
Use and customization documentation.