vm_method.c: overrid flag of prepending method
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39743 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_method.c: overrid flag of prepending method
defined in prepending class too, not adding zsuper entry.
[ruby-core:53106] [Bug #8005]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39743 b2dd03c8-39d4-4d8f-98ff-823fe69b080e