mruby/mruby — pull request #225 by masuidrive (2012-06-02 08:08:01+00:00)
Title: fixed const_get && const_missing issue

- Fixed Module.const_missing issue.
- Module.const_get search path. const_get has sought outer module.

Verification code.
```ruby
module A
Test0 = "Test0"
def self.const_missing(name)
"A::#{name}"
end
end
p A::Test0
p A::Test1

module B
def self.const_missing(name)
"B::#{name}"
end
end
p B::Test2

class C
def self.const_missing(name)
"C::#{name}"
end
end
p C::Test3

class D < C
end
p D::Test4

def Object::const_missing(name)
"Object::#{name}"
end
p E

class F
end
p F::B10
```