New building "belfry" and demo of new engine

Hi guys,

new patch 1.0.40 (+ hotfix 1.0.40b) has been released

improvements:

• added demo of new engine Archaeopteryx 2 (Arx2)
• added new building "Belfry": allows to control curfew

bugfixes: !+ fixed critical bug "Out of memory" during the game saving !+ fixed bug SetProcessorOptimizer:223 (Attempted to divide by zero) !+ fixed bug with wrong positions of barbarians fortresses

• the player's character is "immortal" for 2 weeks