add hl1,portal,dod source code

game/shared/portal/portal_shareddefs.cpp

@@ -0,0 +1,13 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+#include "cbase.h"
+#include "portal_shareddefs.h"
+
+char *g_ppszPortalPassThroughMaterials[] = 
+{ 
+	"lights/light_orange001", 
+	NULL,
+};