[giow] (3) Try to define when document.open() doesn't work more precisely.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=17869
Affected topics: HTML Syntax and Parsing

git-svn-id: http://svn.whatwg.org/webapps@7757 340c8d12-0b0e-0410-8428-c7bf67bfef74
[giow] (3) Allow custom properties on Location objects to work for the Document whose Location object it originally was.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=20701
Affected topics: DOM APIs, Security

git-svn-id: http://svn.whatwg.org/webapps@7758 340c8d12-0b0e-0410-8428-c7bf67bfef74