reduced default debug hook verbosity

src/libstrongswan/debug.c

@@ -24,6 +24,8 @@
  * default dbg function which printf all to stderr
  */
 void dbg_default(int level, char *fmt, ...)
+{
+	if (level <= 1)
 	{
 		va_list args;
 	
@@ -32,5 +34,6 @@ void dbg_default(int level, char *fmt, ...)
 		fprintf(stderr, "\n");
 		va_end(args);
 	}
+}
 
 void (*dbg) (int level, char *fmt, ...) = dbg_default;