mruby/mruby — pull request #401 by masamitsu-murase (2012-07-29 05:27:00+00:00)
Title: Modify class inheritance

First patch checks type more strictly when class is defined.

I think that the type of superclass should be checked.
For example, the following case should raise TypeError.
```Ruby
class A; end
class B; end
class C < A; end
class C < B; end # mismatch of superclass
```

Second patch modifies test for class to avoid name conflict.