Add an example for folks who can never remember how to generate a recursive diff for use with send-pr(1).
Add an example for folks who can never remember how to generate a
recursive diff for use with send-pr(1).

PR:	12440
Requested by:	David Kelly <dkelly@hiwaay.net>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase