[cgiow] (0) Add minlength='', since data shows people are using pattern='' to work around the absence of this feature.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=10053
Affected topics: DOM APIs, HTML

git-svn-id: http://svn.whatwg.org/webapps@8206 340c8d12-0b0e-0410-8428-c7bf67bfef74