Add collapsed ruins when damage level == 100.
Animation class update.
Merge branch 'master' of https://github.com/gecube/opencaesar3 into vs2008-added

Conflicts:
	building.cpp : resolved
	house.cpp : resolved
Animation moved to oc3_animation.h/cpp. AnimationLoader built into Animation class.
Creation of buildings move into ConstructionManager class. BuidlingEngineer move into oc3_buildingengineer.h/cpp
engineer building now show flag when have workers. And engineer will create only have worker.
add new files to makefile for gcc