Land units with capability security get a combat bonus regardless of
efficiency. This lets players get the benefits of a security unit at
a discount: just don't build it beyond 10%.
Multiply the combat bonus by eff/100. Together with the previous
commit, this closes bug#64.
Note that the the strength of a security unit's commando raid is
already proportional to its efficiency.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Markus Armbruster
04dddb6bd1