- added (very basic) SDL template in CApplication and CEngine
- split project into two targets: colobot_old (dependent on DirectX and WinAPI)
and colobot_new (dependent on SDL and OpenGL)
- moved sound.h/cpp to old/ and created new template in Snd namespace
- added platform-independent dialog boxes in app/system.h/cpp
- changed structs from D3DVECTOR to Math::Vector
and from D3DMATRIX to Math::Matrix
- changed functions to new Math namespace functions
- moved mainmovie module from graphics to object
- added Get and Set to Math::Matrix