Document the behavior or the new --notes, --notes=<ref> and --no-notes
options, and list --show-notes[=<ref>] and --[no-]standard-notes options
as deprecated.
Signed-off-by: NJohan Herland <johan@herland.net>
Acked-by: NJeff King <peff@peff.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>