Pass cursorOptions to planner_setup_hook.

Pass cursorOptions to planner_setup_hook.

Commit 94f3ad3961a2cb32d30c79f01a70db4caff13318 failed to do this
because I couldn't think of a use for the information, but this has
proven to be short-sighted. Best to fix it before this code is
officially released.

Now, the only argument to standard_planenr that isn't passed to
planner_setup_hook is boundParams, but that is accessible via
glob->boundParams, and so doesn't need to be passed separately.

Discussion: https://www.postgresql.org/message-id/CA+TgmoYS4ZCVAF2jTce=bMP0Oq_db_srocR4cZyO0OBp9oUoGg@mail.gmail.com