[dependencies]Fix mem. leak in TiXML in case of error cloning an xml
[engine]Fix mem. leaks in cases of error
[engine]Mem. leaks fixing in animations: Fixed old release code where animation manager handles all memory for all subparts of an animation. The correct pattern in C++ is every object creates/destroys what he owns
[engine]Mem. leaks in surfaces when deletion without any texture added to it.