various improvements

- use dig for resolving host names
- ascon.c: fix terminator parsing
- property callback: change property before callback
- logger.c:default for logger period must be the old value instead of 1
- add frappy type history writing
- increase max. logreader line length
- HIPNONE returns "null" with json protocol
- encode strings properly in formatNameValue
- fix memory leak in json2tcl
- scriptcontext: do not show debug messages when script starts with underscore or when the "send" property is empty
- scriptcontext: remove args for action timestamp
- scriptcontext: "que" function will replace an already queued action, e.g. for 'halt
- introduced updatestatus script

sctdriveadapter.c

@@ -56,7 +56,7 @@ static int SCTDRIVHalt(void *data)
 
   self = (pSctDrive) data;
   if (GetHdbProperty(self->node, "halt", dummy, sizeof dummy)) {
-    SctQueueNode(self->c, self->node, HaltPRIO, "halt", NULL);
+    SctQueueNode(self->c, self->node, HaltPRIO, "halt", 1, NULL);
   } else if (GetHdbProperty(self->node, "status", dummy, sizeof dummy)) {
     SetHdbProperty(self->node, "status", "idle");
   }