* lib/uri/rfc3986_parser.rb: raise exception when given a URI string has non ASCII.

It is to keep the regexp compiled for US-ASCII.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46493 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
remove registry

'registry' is not used and RFC3986 doesn't use it.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e