update: Make ships produce after eating and building

update: Make ships produce after eating and building

People in sectors first eat, then build the sector, then produce.
People in ships produce, eat, then build.

The starvation command can be off for fishing vessels, because it
doesn't consider the food they produce.

Change ships to match sectors.  "Fixes" starvation.  Fishing boats and
oil derricks being repaired at sea become a bit more productive.

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>