* parse.y (reg_named_capture_assign_iter): ignore non-local name
  captures, including non-ASCII constant names.
  [ruby-dev:50719] [Bug #15437]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66463 b2dd03c8-39d4-4d8f-98ff-823fe69b080e