[Freeciv-Dev] diplomat code,

[Nicolas BRUNEL <brunel@xxxxxxxxxxxxxxxxxxxx>]

Hello Tony,

    I took more time to have a closer look at what AI is doing. So, I saw
diplomats briding my units and stealing my techs ! :) There are two things
which can be improved. 

    1 - As for horsemen, diplomats can stop their move earlier to stay out
        of trouble.
    2 - If no tech is found in an ennemy city, don't try to steal
        techs from this foe before a given number of turns.

Optionnaly,

    3 - Diplomats may have bodyguard. 

That's all for tonigth,

Nicolas