* ext/io/console/extconf.rb: obtain optional hash by rb_scan_args() by
default right now.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39271 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
and restore tty modes using them, so that original modes can be
restored even if orignal fds are closed. [ruby-dev:41225]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e