- convert svc_deltapacketentities

- add a Host_NetError that dumps a packet log and disconnects, and use
  it instead of Host_EndGame in most cases
- fix a couple multiply-defined vars

qw/source/sv_model.c

@@ -36,7 +36,6 @@ static const char rcsid[] =
 #include "QF/model.h"
 
 const int   mod_lightmap_bytes = 1;
-cvar_t     *gl_sky_divide;	// not used but needed for linking
 
 void Mod_LoadBrushModel (model_t *mod, void *buffer);