Bug 945222 - Update web-platform-tests to revision ea603b0f7adeae10fe938dd310e3e883f1abded0

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rename : testing/web-platform-tests/tests/2dcontext/fill-and-stroke-styles/2d.pattern.repeat.null.html => testing/web-platform-tests/tests/2dcontext/fill-and-stroke-styles/2d.pattern.repeat.unrecognisednull.html
Remove bogus files
Try disabling some unstable tests.