[isisd] Fix compiler warnings and allow v4-only compilation

2006-12-08 Hannes Gredler <hannes@gredler.at>

	* isis_adjacency.c: (isis_new_adj) Allow NULL snpa argument.
	* isis_pdu.c: (various) Update calls to isis_new_adj() to pass
	  NULL and use default.
	* (general) Add forward declarations where required.
	  Fix up const char *'s.
	  Allow V4-only compilation.
diff --git a/isisd/isis_main.c b/isisd/isis_main.c
index 74fc647..2411518 100644
--- a/isisd/isis_main.c
+++ b/isisd/isis_main.c
@@ -107,6 +107,16 @@
 char **_argv;
 char **_envp;
 
+/*
+ * Prototypes.
+ */
+void reload(void);
+void sighup(void);
+void sigint(void);
+void sigterm(void);
+void sigusr1(void);
+
+
 /* Help information display. */
 static void
 usage (int status)