Reviewed by Adele.
        
        Test for http://bugs.webkit.org/show_bug.cgi?id=12595
        REGRESSION: Can't add item to cart at lnt.com (JS type error)
        <rdar://problem/4722863>
        
        Expanded version of Darin's test case. 

        * fast/forms/old-names-expected.txt: Added.
        * fast/forms/old-names.html: Added.

WebCore:

        Reviewed by Adele.

        Fix http://bugs.webkit.org/show_bug.cgi?id=12595
        REGRESSION: Can't add item to cart at lnt.com (JS type error)
        <rdar://problem/4722863>
        
        Emulate Firefox behavior where form elements accessed by a name
        can be accessed with that name later even if the name changes or
        even if element is removed from the document.
        
        This is loosely based on Darin's earlier patch for the same problem but
        is much less expansive. It takes somewhat different approach to more closely
        mimic Firefox behavior. Includes expanded test case.

        * bindings/js/JSHTMLFormElementCustom.cpp:
        (WebCore::JSHTMLFormElement::canGetItemsForName):
            Use new the HTMLFormElement::getNamedElements() method
        (WebCore::JSHTMLFormElement::nameGetter):
            Use new the HTMLFormElement::getNamedElements() method
        * html/HTMLFormElement.cpp:
        (WebCore::HTMLFormElement::HTMLFormElement):
        (WebCore::HTMLFormElement::~HTMLFormElement):
        (WebCore::HTMLFormElement::elementForAlias):
        (WebCore::HTMLFormElement::addElementAlias):
            Maintain a map of known element aliases
        (WebCore::HTMLFormElement::getNamedElements):
            Get a list of elements matching the name, based both their
            current names and known aliases (earlier names).
            Keep the alias list in sync.
        * html/HTMLFormElement.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@20260 268f45cc-cd09-0410-ab3c-d52691b4dbfc