Changed the API to pass the NPDU data down through the datalink layer in order to make the dlmstp work since it needs data-expecting-reply information. Of course, this affected all the demos, all the unit tests, and most of the demo handlers. Corrected some TSM leaks in confirmed messages. Refactored the AtomicReadFile and AtomicWriteFile demos by moving the Send_ functions to the demo/handlers directory and using the s_whois common handler. Added some common defines for the BACnet version and revision since several modules were using the info. Hopefully I didn't break too many things.

bacnet-stack/demo/timesync/main.c

@@ -49,8 +49,10 @@
 static uint8_t Rx_Buf[MAX_MPDU] = { 0 };
 
 /* global variables used in this file */
+#if 0
 static int32_t Target_Object_Instance_Min = 0;
 static int32_t Target_Object_Instance_Max = BACNET_MAX_INSTANCE;
+#endif
 
 static bool Error_Detected = false;
 
@@ -133,7 +135,7 @@ int main(int argc, char *argv[])
     BACNET_ADDRESS my_address, broadcast_address;
 #endif
 
-    /* FIXME: we could send directed time sync, and how to we send UTC? */
+    /* FIXME: we could send directed time sync, and how do we send UTC? */
 #if 0
     if (argc < 2) {
         printf("Usage: %s date time [device-instance]\r\n"