* Performance improvement

* Added ancestor config cache indicating wether the node or an ancestor is config false or true
  * Improved yang cardinality lookup
* Added yang_init(), called from all apps using yang

apps/netconf/netconf_main.c

@@ -710,7 +710,8 @@ main(int    argc,
      */
     clicon_log_init(__PROGRAM__, dbg?LOG_DEBUG:LOG_INFO, logdst); 
     clicon_debug_init(dbg, NULL); 
-
+    yang_init(h);
+    
     /* Find, read and parse configfile */
     if (clicon_options_main(h) < 0)
 	goto done;