We can't add new graphics options without altering the original Flash menu
files which we don't have. I disabled the r_lodBias functionality which
can make the game look worse by adding a bias to the texture lookup
functions which cause choosing texture mip maps that are smaller than the
original image size in every view even though we want the first mip map
level 0 which is the best quality.
It now works on Linux so executing it doesn't freeze the game
like described in
https://github.com/RobertBeckebans/RBDOOM-3-BFG/issues/33
Furthermore, this function doesn't have any parameters anymore
(on any platform) because the only thing supplied was the original
program arguments +"+set com_skipIntroVideos 1" anyway - this is now
done in Sys_ReLaunch() (also on Windows).
Having the program arguments as one string is bad on Linux/POSIX
because there it's expected that the program arguments are one
C-string per argument.
