(PR#11201) Re: AI handles tech_cost_style != 0 badly

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=11201 >

> [cazfi - Fri Nov 26 00:04:43 2004]:
>   In many places AI code still assumes that tech cost is relative to 
> num_unknown_techs_for_goal(). This seems to be major problem when 
> combined with high researchcost setting. AI starts research that will 
> take very long time when equally important low level techs are 
> available.

I've gone through all usage of num_unknown_techs_for_goal() in the AI,
and found no fault with it. However, it does not calculate in the cost
of getting to a given tech when selecting tech goal. This should be fixed.

  - Per