config: Enlarge configuration tables that have variable size

config: Enlarge configuration tables that have variable size

Configuration tables product, sect-chr, ship-chr, plane-chr, land-chr,
nuke-chr have a bit of extra space deities can use for customizing
their games.  Give them more: enlarge product from 23 to 31
entries (plus one sentinel), sect-chr from 39 to 63, ship-chr from 47
to 127, plane-chr from 47 to 127, land-chr from 31 to 127, and
nuke-chr from 20 to 63.

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