Bugfix/confirmed handlers empty service request (#885)

* Added reject in all confirmed service handlers, except GetEventInformation, when confirmed services with zero length occur which rejects with required parameters are missing message.

* Refactored errno use in service using debug_perror. Changed debug_perror usage to debug_fprintf. 

* Updated file and function headers in basic/service modules.

* Changed NDPU priority on confirmed messages to use requested NDPU priority.

* Renamed debug_aprintf to debug_printf_stdout for clarity.

* Convert most debug_fprintf usage to debug_print to reduce text bloat in AVR build

ports/linux/dlmstp.c

@@ -1,11 +1,11 @@
-/**************************************************************************
- *
- * Copyright (C) 2008 Steve Karg <skarg@users.sourceforge.net>
- * Updated by Nikola Jelic 2011 <nikola.jelic@euroicc.com>
- *
- * SPDX-License-Identifier: MIT
- *
- *********************************************************************/
+/**
+ * @file
+ * @brief Provides Linux-specific DataLink functions for MS/TP.
+ * @author Steve Karg <skarg@users.sourceforge.net>
+ * @author Nikola Jelic 2011 <nikola.jelic@euroicc.com>
+ * @date 2008
+ * @copyright SPDX-License-Identifier: GPL-2.0-or-later WITH GCC-exception-2.0
+ */
 #include <stdbool.h>
 #include <stdint.h>
 #include <stddef.h>
@@ -27,9 +27,6 @@
 /* port specific */
 #include "rs485.h"
 
-/** @file linux/dlmstp.c  Provides Linux-specific DataLink functions for MS/TP.
- */
-
 /* Number of MS/TP Packets Rx/Tx */
 uint16_t MSTP_Packets = 0;