Reviewed by Ken.

    Reviewed by Ken.

	<rdar://problem/3907705> REGRESSION (172-173): DHTML menus are broken at hrweb.apple.com

	* khtml/dom/html_document.cpp:
        (HTMLDocument::nameableItems): New method, wrapper for HTMLCollection creation.
        * khtml/dom/html_document.h:
        * khtml/ecma/kjs_html.cpp:
        (KJS::HTMLDocument::tryGet): use doc.nameableItems(), not doc.all()!
        * khtml/html/html_miscimpl.cpp:
        (HTMLCollectionImpl::traverseNextItem): Added new DOC_NAMEABLE_ITEMS type, this represents
	the items that can be accessed directly as a document propery, in particular forms, images,
	objects, applets and embeds.
        (HTMLCollectionImpl::updateNameCache): Fix some nameCache/idCache confusion.
        (HTMLFormCollectionImpl::updateNameCache): Ditto.
        * khtml/html/html_miscimpl.h:
        (DOM::HTMLCollectionImpl::): Added new type.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8185 268f45cc-cd09-0410-ab3c-d52691b4dbfc