Rename internal_hooks -> internal_configuration, cJSON_New_item -> create_item

tests/print_number.c

@@ -33,7 +33,7 @@ static void assert_print_number(const char *expected, double input)
     buffer.length = sizeof(printed);
     buffer.offset = 0;
     buffer.noalloc = true;
-    buffer.hooks = global_hooks;
+    buffer.configuration = global_configuration;
 
     memset(item, 0, sizeof(item));
     cJSON_SetNumberValue(item, input);