auf multimap umgestellt, techList immer noch nur halbfertig, cross abhängigkeiten zu beachten, komischer segfault beim init-aufruf von den req-gettern
Tech tree policies added, Techtree build access via inittechtree<[Race]TechTree> possible. Some minor changes in technology
TechList almost finished, map changed to multimap as there are same units with different requirements and costs.
findUnit and findBuilding can be accessed several times with the same key to get each different requirements/costs. returns NULL if no Object is connected with the key, or if there are no any more objects linked to the specific key.
Merge branch 'chris_work'