Upgrade to rustc 459ffc2adc74f5e8b64a76f5670edb419b9f65da 2014-07-17
Rename SchemeRelativeUrl to RelativeSchemeData.
Add convenience method to acces various pieces of an URL.
Add UrlParser to set optional parameter through method chaining.
Require an UrlParser for UrlUtils. Remove encoding_override from Url.
Add API to override which schemes are relative and default ports.
Backport to rustc 64b990d 2014-06-26