[RFC] Remove FEH

Put this up here for discussion. Basically FEH was added to check if the user had a proper setup, safe guard against the user running with bad drivers, bad color depth or without X11 running.

With most FLOSS drivers supporting all the way up to OpenGL 3.3 it seems like checking for driver support is redundant. We before safeguarded against bad color depth but AFAIK we since then support any colordepth? And with headless on the horizon it feels completely wrong to depend on X11 to even start the application :)

So to me it feels like its time to drop FEH, and if anything move some of the checks into the programs if need be. Thoughts?