examples/coap_list.[ch]: Document that these files are DEPRECATED

/*
 * examples/coap_list.[ch] are DEPRECATED.  You should be using
 * struct coap_optlist_t instead with the following functions which are a part
 * of libcoap.
 *
 * coap_new_optlist()
 * coap_insert_optlist()
 * coap_delete_optlist()
 * coap_add_optlist_pdu()
 *
 * See 'man coap_pdu_setup' for further information.
 *
 * examples/coap_list.[ch] files will be removed in a future release
 * They are left here to support building backward compatability of old versions
 * of coap-client
 */

examples/coap_list.c

@@ -8,6 +8,23 @@
  * use.
  */
 
+/*
+ * examples/coap_list.[ch] are DEPRECATED.  You should be using
+ * struct coap_optlist_t instead with the following functions which are a part
+ * of libcoap.
+ *
+ * coap_new_optlist()
+ * coap_insert_optlist()
+ * coap_delete_optlist()
+ * coap_add_optlist_pdu()
+ *
+ * See 'man coap_pdu_setup' for further information.
+ *
+ * examples/coap_list.[ch] files will be removed in a future release
+ * They are left here to support building backward compatability of old versions
+ * of coap-client
+ */
+
 /* #include "coap_config.h" */
 
 #include <stdio.h>

examples/coap_list.h

@@ -8,6 +8,23 @@
  * use.
  */
 
+/*
+ * examples/coap_list.[ch] are DEPRECATED.  You should be using
+ * struct coap_optlist_t instead with the following functions which are a part
+ * of libcoap.
+ *
+ * coap_new_optlist()
+ * coap_insert_optlist()
+ * coap_delete_optlist()
+ * coap_add_optlist_pdu()
+ *
+ * See 'man coap_pdu_setup' for further information.
+ *
+ * examples/coap_list.[ch] files will be removed in a future release
+ * They are left here to support building backward compatability of old versions
+ * of coap-client
+ */
+
 #ifndef _COAP_LIST_H_
 #define _COAP_LIST_H_