[e] (0) Recast window.open() in terms of an algorithm.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=26317
Affected topics: DOM APIs

git-svn-id: https://svn.whatwg.org/webapps@8777 340c8d12-0b0e-0410-8428-c7bf67bfef74
[e] (0) Simplify window.open even further
Affected topics: DOM APIs

git-svn-id: https://svn.whatwg.org/webapps@8778 340c8d12-0b0e-0410-8428-c7bf67bfef74
[giow] (3) Fix window.open('') to be more like deployed browsers rather than defaulting to 'about:blank'.
Affected topics: DOM APIs

git-svn-id: https://svn.whatwg.org/webapps@8779 340c8d12-0b0e-0410-8428-c7bf67bfef74
Merge remote branch 'origin/master' into whatwg