Normable 1.1d

• Fixed diplomacy screen tech trading issue caused by infinite free tech bug fix

• Fixed cause of later free tech problems when a city with free tech buildings (e.g. Oracle) has changed owners

• Fixed buildings that provide free techs (e.g Oracle) not granting free tech to AI (moved freeTechsAllowed counter to onTechAcquired from onBuildingBuilt since it only gets called after AI receives free tech)
• (For Modders) Added CustomScriptData.py which is a convenient persistent variable interface

• Fixed advanced start incorrectly sending notice for unauthorized free techs
• Free techs allowed from projects (e.g. The Internet) are now exact
• Fixed lions losing desert strength on flood plains and oasis tiles (wolves still lose tundra/ice strength in forest)