I don't like that the event structure includes the variable length array.
That really makes it a pain to change the name of an event (on the flip
side, freeing events is easier I guess).
Anyway, to correctly rename an event we need to actually remove the event
from the correct dc and then add a new event with the new name. The
previous code was insane (it only worked if the new name was of smaller or
equal length, otherwise it had a beautiful buffer overflow).
And of course we need to do this both for the current_dive and the
displayed_dive.
Fixes#616
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
74616cdddf