Fix server linking wrt skin stuff.

libs/models/null_model.c

@@ -33,7 +33,9 @@ static __attribute__ ((used)) const char rcsid[] =
 
 #include "QF/cvar.h"
 #include "QF/model.h"
+#include "QF/pcx.h"
 #include "QF/render.h"
+#include "QF/skin.h"
 
 void
 Mod_LoadLighting (bsp_t *bsp)
@@ -74,3 +76,26 @@ void
 Mod_SubdivideSurface (msurface_t *fa)
 {
 }
+
+viddef_t    vid;
+
+VISIBLE void
+Skin_InitTranslations (void)
+{
+}
+
+VISIBLE void
+Skin_ProcessTranslation (int cmap, const byte *translation)
+{
+}
+
+VISIBLE void
+Skin_SetupSkin (skin_t *skin, int cmap)
+{
+}
+
+VISIBLE struct tex_s *
+LoadPCX (QFile *f, qboolean convert, byte *pal)
+{
+	return 0;
+}