eval.c: pass unknown options

* eval.c (extract_raise_opts): pass unknown options to the
  exception, so that exception class can receive a hash argument.
  [ruby-core:63203] [Feature #8257]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46456 b2dd03c8-39d4-4d8f-98ff-823fe69b080e