contiki: re-add dtls_package_name and dtls_package_version

Statically define PACKAGE_NAME and PACKAGE_VERSION in contiki platform header.
This will require maintaining them in addition to values in configure.ac.

Change-Id: I08948dfdb4ddeafeed273a917367ee5ad237df8f
Signed-off-by: Gaëtan Harter <gaetan.harter@inria.fr>

dtls_debug.c

diff --git a/dtls_debug.c b/dtls_debug.c
index 7b3ae10..d3bad4d 100644
--- a/dtls_debug.c
+++ b/dtls_debug.c
@@ -41,7 +41,6 @@
 
 static int maxlog = DTLS_LOG_WARN;	/* default maximum log level */
 
-#ifndef WITH_CONTIKI
 const char *dtls_package_name() {
   return PACKAGE_NAME;
 }
@@ -49,7 +48,6 @@
 const char *dtls_package_version() {
   return PACKAGE_VERSION;
 }
-#endif /* WITH_CONTIKI */
 
 log_t 
 dtls_get_log_level() {

dtls_debug.h

diff --git a/dtls_debug.h b/dtls_debug.h
index d46b6da..80e56d6 100644
--- a/dtls_debug.h
+++ b/dtls_debug.h
@@ -57,14 +57,11 @@
        DTLS_LOG_NOTICE, DTLS_LOG_INFO, DTLS_LOG_DEBUG
 } log_t;
 
-#ifndef WITH_CONTIKI
-/* Contiki does not have the required PACKAGE_ variables configured */
 /** Returns a zero-terminated string with the name of this library. */
 const char *dtls_package_name(void);
 
 /** Returns a zero-terminated string with the library version. */
 const char *dtls_package_version(void);
-#endif /* WITH_CONTIKI */
 
 /** Returns the current log level. */
 log_t dtls_get_log_level(void);

platform-specific/platform.h

diff --git a/platform-specific/platform.h b/platform-specific/platform.h
index 9179f2d..83c46ea 100644
--- a/platform-specific/platform.h
+++ b/platform-specific/platform.h
@@ -14,6 +14,12 @@
 
 #include "contiki-conf.h"
 
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "tinydtls"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "0.8.6"
+
 /* support for TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 */
 #ifndef DTLS_CONF_ECC
 #define DTLS_CONF_ECC 1