[giow] (0) Don't provide a stable state when parsing reentrantly, for more consistency with when we run microtask checkpoints
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=24361
Affected topics: DOM APIs

git-svn-id: http://svn.whatwg.org/webapps@8479 340c8d12-0b0e-0410-8428-c7bf67bfef74