Fix a Borland compile error. Now fix the linking...

src/sp_lev.c

@@ -1,4 +1,5 @@
 /* NetHack 3.5	sp_lev.c	$NHDT-Date: 1429755531 2015/04/23 02:18:51 $  $NHDT-Branch: master $:$NHDT-Revision: 1.50 $ */
+/* NetHack 3.5	sp_lev.c	$Date: 2011/01/05 01:28:36 $  $Revision: 1.23 $ */
 /*	Copyright (c) 1989 by Jean-Christophe Collet */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -384,6 +385,10 @@ opvar_free_x(ov)
     Free(ov);
 }
 
+/* Borland doesn't know __FUNCTION__ */
+#ifdef __BORLANDC__
+#define __FUNCTION__ __FUNC__
+#endif
 #define opvar_free(ov) { if (ov) { opvar_free_x(ov); ov = NULL; } else impossible("opvar_free(), %s", __FUNCTION__); }
 
 struct opvar *