Documentation: clarify and expand description of --signoff
Building on past documentation improvements in b2c150d3aa (Expand documentation describing --signoff, 2016-01-05), further clarify that any project using Git may and often does set its own policy. However, leave intact reference to the Linux DCO, which Git also uses. It is reasonable for Git to advocate for its own Signed-off-by methodology in its documentation, as long as the documentation remains respectful that YMMV and other projects may well have very different contributor representations tied to Signed-off-by. Signed-off-by: Bradley M. Kuhn <bkuhn@sfconservancy.org> Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jeff King <peff@peff.net> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>