fixed the way to detect symlink Daniel

* configure.in: fixed the way to detect symlink
Daniel
diff --git a/config.h.in b/config.h.in
index 8616d04..bf54bc0 100644
--- a/config.h.in
+++ b/config.h.in
@@ -43,6 +43,9 @@
 /* Define if you have the printf function.  */
 #undef HAVE_PRINTF
 
+/* Define if you have the signal function.  */
+#undef HAVE_SIGNAL
+
 /* Define if you have the snprintf function.  */
 #undef HAVE_SNPRINTF
 
@@ -121,6 +124,9 @@
 /* Define if you have the <netinet/in.h> header file.  */
 #undef HAVE_NETINET_IN_H
 
+/* Define if you have the <signal.h> header file.  */
+#undef HAVE_SIGNAL_H
+
 /* Define if you have the <stdarg.h> header file.  */
 #undef HAVE_STDARG_H