textureconv: Made -(no)mipmaps work. Defaulted to DXT5 for alpha
textures (since DXT3 almost never seems any good). Recompiled with new
DevIL code.
GUIRenderer: Removed complaints about 0-sized objects (e.g. hitpoint
bars).
Atlas: Added forgotten files.
This was SVN commit r3006.
main.cpp: Allowed correct operation when not calling Init/Shutdown.
Game.cpp: Stopped complaint when starting game with no GUI.
This was SVN commit r2446.