object.c: nested path const_defined?
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44194 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
object.c: nested path const_defined?
well as const_get. [Feature #7414]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44194 b2dd03c8-39d4-4d8f-98ff-823fe69b080e