Secured event decoding by refactoring deprecated functions. (#1126)

* Secured event and authentication decoding by removing deprecated functions.

* Added extended, discrete-value, double-out-of-range, signed-out-of-range, unsigned-out-of-range, change-of-characterstring, change-of-status-flags, change-of-reliability, and change-of-timer event notification encode, decode, and unit testing with #ifdef disabled by default.

src/bacnet/dcc.c

@@ -178,7 +178,7 @@ int dcc_apdu_encode(
 }
 
 /**
- * @brief Encode the COVNotification service request
+ * @brief Encode the DeviceCommunicationControl service request
  * @param apdu  Pointer to the buffer for encoding into
  * @param apdu_size number of bytes available in the buffer
  * @param timeDuration  Optional time duration in minutes.