files item.config, product.config, sect.config, infra.config.
(empfile): Declare the new config files. Reorder table entries so
that read_builtin_tables() reads the config files in the right order.
(bigcity_dchr, opt_BIG_CITY, init_dchr): Remove. Deities can edit
sect.config instead.
member p_effic by sctstr member d_peffic. Tables updated.
(show_sect_capab): Adapted.
(prod_eff): Adapted; requires changing first parameter to sector type.
Callers changed.
(P_MDUST): Remove, because pchr[P_MDUST] now identical to
pchr[P_DUST].
Useless, remove. Users changed to check pchr's sentinel, because
that's clearer than comparing the index to P_MDUST or sizeof(pchr) /
sizeof(*pchr).
(pchr): Change sentinel's p_name and p_sname to NULL. Sentinel
checks changed.
Store only up to MAXPRCON constituents, not MAXCHRNV; code doesn't
fully support more than three anyway. Remove member p_nv, use item
type I_NONE for unused slots. Rename members p_vtype, p_vamt to
p_ctype, p_camt to avoid confusion with variable-style storage.
(pchr): Initializers adapted.
(nullify_objects, materials_cost, materials_charge, prod,
show_sect_capab, grind): Adapt, simplify where possible, protect
against bad item types in pchr[].
(MAXCHRNV): Unused, remove.
ETUS is just the default for etu_per_update. Deities don't change
ETUS, they change etu_per_update by editing econfig. This nonsense
dates back at least to chainsaw 3.31, where it was just as broken as
now. Replace ETUS by 60 and simplify.
