Part of a series bringing UDDF export closer to the UDDF standard, as
per www.uddf.org.
Currently when exporting to UDDF buddy entities are created
one-per-unique-combination. This means that a group of buddies on a dive
are exported as a single buddy, with the names comma separated.
This patch identifies all unique buddies, whether used independently or
along with other buddies on a dive. They are then linked independently
on each profile.
It also uses the UDDF standard <link ref=""> instead of
<buddy_ref ref="">
Signed-off-by: Marton Long <martin@longhome.co.uk>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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