Use tech3 way of specifying 2D colours.
Some unused variable warning fixes.
Removed use of scrap image.
Create permanent shaders for 2D images.
Handle 2D shader in front end, use the same command as tech3.
Initial work for converting to 2D drawing with shaders.
All graphics from wad file are loaded as shaders.
Draw all text with shaders.
Draw Hexen 2 status bar with shaders, preload them all.
Formatting fixups.
Renamed some methods.
Draw Quake/Hexen 2 menus wit shaders, except translated images.
Use shaders for other Quake/Hexen 2 HUD drawing.
Use shaders for some of the Quake 2 screen graphics.