[url] Import Node.js tests (#42)

Probably lots of overlap. Unsure how much work. But, they also probably include a decent number of corner cases that we might or might not have covered.

- https://github.com/iojs/io.js/blob/v1.x/test/parallel/test-http-url.parse-auth.js
- https://github.com/iojs/io.js/blob/v1.x/test/parallel/test-http-url.parse-search.js
- https://github.com/iojs/io.js/blob/v1.x/test/parallel/test-http-url.parse-post.js
- https://github.com/iojs/io.js/blob/v1.x/test/parallel/test-http-url.parse-path.js
- https://github.com/iojs/io.js/blob/v1.x/test/parallel/test-http-url.parse-only-support-http-https-protocol.js
- https://github.com/iojs/io.js/blob/v1.x/test/parallel/test-http-url.parse-basic.js


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