updated for version 7.2.371
Problem:    Build problems on Tandem NonStop.
Solution:   A few changes to #ifdefs (Joachim Schmitz)
diff --git a/src/osdef1.h.in b/src/osdef1.h.in
index bdc6247..8190c9b 100644
--- a/src/osdef1.h.in
+++ b/src/osdef1.h.in
@@ -25,7 +25,7 @@
 extern int	fseeko __ARGS((FILE *, off_t, int));
 #endif
 extern long	ftell __ARGS((FILE *));
-#ifdef HAVE_FTELLO
+#ifdef HAVE_FSEEKO
 extern off_t	ftello __ARGS((FILE *));
 #endif
 extern void	rewind __ARGS((FILE *));