Add reference support for native pointers. (#4615)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/unit-ext/test-ext-arg.c

@@ -67,12 +67,16 @@ static const jerry_char_t test_source[] = TEST_STRING_LITERAL (
 
 static const jerry_object_native_info_t thing_a_info =
 {
-  .free_cb = NULL
+  .free_cb = NULL,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static const jerry_object_native_info_t thing_b_info =
 {
-  .free_cb = NULL
+  .free_cb = NULL,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 typedef struct

tests/unit-ext/test-ext-autorelease.c

@@ -35,6 +35,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope-escape.c

@@ -35,6 +35,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope-handle-prelist-escape.c

@@ -38,6 +38,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope-handle-prelist.c

@@ -38,6 +38,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope-nested.c

@@ -38,6 +38,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope-remove.c

@@ -35,6 +35,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope-root.c

@@ -36,6 +36,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t

tests/unit-ext/test-ext-handle-scope.c

@@ -35,6 +35,8 @@ native_free_cb (void *native_p, /**< native pointer */
 static const jerry_object_native_info_t native_info =
 {
   .free_cb = native_free_cb,
+  .number_of_references = 0,
+  .offset_of_references = 0,
 };
 
 static jerry_value_t