ref_soft colored lighting from leilei.
widescreen/hi-res waterwarp from bszili.
Increase MAXSPANS and other drawing limits to max allowed by the data types to allow rendering bigger maps without dropping polygons.
Increase MAX_EDICTS to 4096.
Use GDI for all windows ref_soft modes rather than broken/depreciated ddraw (fixme: vid_ddraw cvar?)
VS 2013 project.