* Clixon configuration file top-level symbols has changed to clixon-configand namespace check is enforced.

* clixon-config YAML file has new revision: 2019-03-05.
  * New URN and changed top-level symbol to `clixon-config`
* Removed obsolete `_CLICON_XML_NS_STRICT` variable and `CLICON_XML_NS_STRICT` config option.

lib/src/clixon_stream.c

@@ -579,6 +579,7 @@ stream_notify(clicon_handle h,
 	clicon_err(OE_UNIX, errno, "time2str");
 	goto done;
     }
+    /* From RFC5277 */
     cprintf(cb, "<notification xmlns=\"urn:ietf:params:xml:ns:netconf:notification:1.0\"><eventTime>%s</eventTime>%s</notification>", timestr, str);
     if (xml_parse_string(cbuf_get(cb), yspec, &xev) < 0)
 	goto done;