Remove AbstractNode::followed_by_doctype and AbstractNode::inclusively_followed_by_doctype in favour of iterators over following siblings.
Update Makefile.in for move webidls
Move webidl files to dom/webidl
auto merge of #690 : recrack/servo/webidl, r=jdm

FIX #648

PR again #662, need to fix Makefile.in

I really want to use `$(Q)touch $@`. but, it is difficult to me.
So i will fix them next time. Can i ? I need to study Makefile.
auto merge of #1508 : Ms2ger/servo/following-siblings-iter, r=jdm
Implement DOMImplementation::createHTMLDocument

Spec:
http://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument

Closes #1510.
auto merge of #1523 : brunoabinader/servo/domimpl-createhtmldocument, r=Ms2ger

Spec:
http://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument

Closes #1510.