defined why2_calloc & why2_free

same thing as why2_malloc

src/core/lib/utils/memory.c

@@ -8,3 +8,17 @@ void *why2_malloc(unsigned long size)
 
     return malloc(size);
 }
+
+void *why2_calloc(unsigned long element, unsigned long size)
+{
+    //TODO: Add linked list
+
+    return calloc(element, size);
+}
+
+void why2_free(void *pointer)
+{
+    //TODO: Add linked list
+
+    free(pointer);
+}