mruby/mruby — pull request #549 by skandhas (2012-11-13 05:41:48+00:00)
Title: modify Module#class_variables test

```ruby
assert('Module#class_variables', '15.2.2.4.19') do
class Test4ClassVariables1
@@var1 = 1
@@var2 = 2
end
class Test4ClassVariables2 < Test4ClassVariables1
@@var3 = 2
end

Test4ClassVariables1.class_variables == [:@@var1, :@@var2] &&
Test4ClassVariables2.class_variables == [:@@var3]
end
```
Because **iv_tbl** do not guarantee the order of it's value, so the desult of Test4ClassVariables1.class_variables is ```[:@@var1, :@@var2]``` or ```[:@@var2, :@@var1]```.
In ```[:@@var2, :@@var1]``` case, ```Test4ClassVariables1.class_variables == [:@@var1, :@@var2]``` is **false** .