typedef -> using
include guards -> pragma once
typedef struct x { } y; -> struct y { }
some fixes to extremely old code that shouldn't be required any more
Added "surflightscale", "surflightbouncescale" and "surflightsubdivision" cmdline/worldspawn settings.
Fixed: a face should not be skipped when it has both sky and nodraw texinfo flags.
Fixed some non-windows compilation errors.