Defined two functions that return the library name and version string.

debug.c

@@ -1,6 +1,6 @@
 /* debug.c -- debug utilities
  *
- * Copyright (C) 2010--2012 Olaf Bergmann <bergmann@tzi.org>
+ * Copyright (C) 2010--2012,2014 Olaf Bergmann <bergmann@tzi.org>
  *
  * This file is part of the CoAP library libcoap. Please see
  * README for terms of use. 
@@ -37,6 +37,14 @@
 
 static coap_log_t maxlog = LOG_WARNING;	/* default maximum log level */
 
+const char *coap_package_name() {
+  return PACKAGE_NAME;
+}
+
+const char *coap_package_version() {
+  return PACKAGE_STRING;
+}
+
 coap_log_t 
 coap_get_log_level() {
   return maxlog;

debug.h

@@ -1,6 +1,6 @@
 /* debug.h -- debug utilities
  *
- * Copyright (C) 2010,2011 Olaf Bergmann <bergmann@tzi.org>
+ * Copyright (C) 2010,2011,2014 Olaf Bergmann <bergmann@tzi.org>
  *
  * This file is part of the CoAP library libcoap. Please see
  * README for terms of use. 
@@ -35,6 +35,12 @@ coap_log_t coap_get_log_level();
 /** Sets the log level to the specified value. */
 void coap_set_log_level(coap_log_t level);
 
+/** Returns a zero-terminated string with the name of this library. */
+const char *coap_package_name();
+
+/** Returns a zero-terminated string with the library version. */
+const char *coap_package_version();
+
 /** 
  * Writes the given text to @c COAP_ERR_FD (for @p level <= @c
  * LOG_CRIT) or @c COAP_DEBUG_FD (for @p level >= @c LOG_WARNING). The