Mercenaries rumor should increase demand

[drspendlove]

The Mercenaries rumor should increase the demand for weapons components as there is a sudden market for small arms in the zone. It shouldn't be a massive increase and wouldn't adjust trade law, but it'd be a nice touch and add even more value to that rumor for traders.

[fallen]

Cool suggestion, could be a whole run of minor improvements down this direciton.