Reorganize types for `ObjectSpace.count_objects`

#### Addition

- T_COMPLEX
- T_RATIONAL

#### Deletion

- T_FALSE
- T_FREE
- T_TRUE
- T_SYMBOL
- T_UNDEF

mrbgems/mruby-objectspace/src/mruby_objectspace.c

@@ -79,12 +79,7 @@ os_count_objects(mrb_state *mrb, mrb_value self)
     mrb_value type;
     switch (i) {
 #define COUNT_TYPE(t) case (MRB_T ## t): type = mrb_symbol_value(mrb_intern_lit(mrb, #t)); break;
-      COUNT_TYPE(T_FALSE);
-      COUNT_TYPE(T_FREE);
-      COUNT_TYPE(T_TRUE);
       COUNT_TYPE(T_INTEGER);
-      COUNT_TYPE(T_SYMBOL);
-      COUNT_TYPE(T_UNDEF);
       COUNT_TYPE(T_FLOAT);
       COUNT_TYPE(T_CPTR);
       COUNT_TYPE(T_OBJECT);
@@ -102,6 +97,8 @@ os_count_objects(mrb_state *mrb, mrb_value self)
       COUNT_TYPE(T_DATA);
       COUNT_TYPE(T_FIBER);
       COUNT_TYPE(T_ISTRUCT);
+      COUNT_TYPE(T_COMPLEX);
+      COUNT_TYPE(T_RATIONAL);
 #undef COUNT_TYPE
     default:
       type = mrb_fixnum_value(i); break;