vm_eval.c: share with rb_obj_respond_to
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51646 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_eval.c: share with rb_obj_respond_to
rb_obj_respond_to. [ruby-core:70460] [Bug #11465]
merge r39881.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51646 b2dd03c8-39d4-4d8f-98ff-823fe69b080e