[giow] (3) Try to match reality better for dynamic location.hash navigation.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=17155
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@7846 340c8d12-0b0e-0410-8428-c7bf67bfef74
(cherry picked from commit 5069600eb2e9a049c249760c1e74f42ad1bb67c3)

The navigating to a fragment identifier" algorithm shouldn't be async
https://www.w3.org/Bugs/Public/show_bug.cgi?id=18178