Fixed: ["autocli:hide-show" extension cause bug in xmldb_put method #343](https://github.com/clicon/clixon/issues/343)

As a side-effect, added extra "autocliext" parameter to:
- clixon_xml2file()
- clixon_json2file()
- clixon_json2cbuf()
- clixon_txt2file()

apps/restconf/restconf_methods_post.c

@@ -879,7 +879,7 @@ api_operations_post(clicon_handle h,
 	/* xoutput should now look: <output xmlns="uri"><x>0</x></output> */
 	break;
     case YANG_DATA_JSON:
-	if (clixon_json2cbuf(cbret, xoutput, pretty, 0) < 0)
+	if (clixon_json2cbuf(cbret, xoutput, pretty, 0, 0) < 0)
 	    goto done;
 	/* xoutput should now look: {"example:output": {"x":0,"y":42}} */
 	break;