[c] (2) Define some authoring conformance criteria that e.g. prevent autocomplete='shipping tel' being set on an <input type=date>
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=23782
Affected topics: HTML

git-svn-id: http://svn.whatwg.org/webapps@8384 340c8d12-0b0e-0410-8428-c7bf67bfef74