[DomCrawler] fix handling of schemes by Link::getUri()

A link (anchor tag with an href attr) in crawled by the Crawler
can contain any valid URI, including mailto: links.

Currently this is not correctly supported by Link::getUri.
Schemes that do not start with 'http' are treated as relative URIs
and appenden to the base URI. This leads to strange URIs like this:
http://foo.com/mailto:foo@bar.com

Fixed Link::getUri to treat any URI with a schema part as an
absolute URL. Updated the unit tests to test for this.
merged branch matthijsvandenbos/matthijsvandenbos/link-handle-scheme (PR #7214)

This PR was merged into the 2.1 branch.

Commits
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8f8ba38 [DomCrawler] fix handling of schemes by Link::getUri()

Discussion
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[DomCrawler] fixed handling of schemes by Link::getUri()

A link (anchor tag with an href attr) in pages crawled by the Crawler
can contain any valid URI, including mailto: links.

Currently this is not correctly supported by `Link::getUri`.
Schemes that do not start with 'http' are treated as relative URIs
and appenden to the base URI. This leads to strange URIs like this:
http://foo.com/mailto:foo@bar.com

Fixed `Link::getUri` to treat any URI with a schema part as an
absolute URL. Updated the unit tests to test for this.

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by matthijsvandenbos at 2013-02-28T11:55:18Z

Ok, I will update the pull request

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by matthijsvandenbos at 2013-02-28T12:25:45Z

Fixed