cdoom bugs

--This bugs are not intended to fix
--some old logitech mouses don't work
--in dosbox, later second time to open cdoom, sound will desapear until to move or click the mouse
--when using -file parameter, need to add one space before or add other parameter cdoom -file s4 -warp 1
--music opl playback is better but not perfect, to play doom.wad songs are diferent from original doom.exe, in doom2.wad almost all songs are ok
--save config is fault sometimes, save diferent values in keyboard variables
--cdoom uses fixed point operations, then glitches in slopes rendering and line of sight in slopes is buggy, is only one basic implementation of slopes in cdoom
--sprites in multiples or adjacents 3d floors sometimes are rendered in wrong order