* Fix recursive reference memory leak in UIWidget
* Make Event/ScheduledEvent memory-leak safe
* Fix exit crashs by freeing graphics resources before destroying GL context
* Add many asserts to avoid any leak regression
* cache text vertex for StaticText, AnimatedText and Creature names
* improved outfit rendering
* fully compatible with OpenGL 1.1
* enable mipmaping for game sprites again
* Ctrl+W hotkey clean game texts
* change in protocol/network classes to make compatible with older protocols
* use filestream for reading dat
* add many ifdefs for multi-protocol support