Reviewed by Oliver (a while ago)

        - just a wee bit more bindings speedup
        
        Store the per-document Node --> JS wrapper cache in the document
        instead of an external hashtable.

        * bindings/js/kjs_binding.cpp:
        (WebCore::ScriptInterpreter::getDOMNodeForDocument):
        (WebCore::ScriptInterpreter::forgetDOMNodeForDocument):
        (WebCore::ScriptInterpreter::putDOMNodeForDocument):
        (WebCore::ScriptInterpreter::forgetAllDOMNodesForDocument):
        (WebCore::ScriptInterpreter::markDOMNodesForDocument):
        * dom/Document.h:
        (WebCore::Document::wrapperCache):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@32788 268f45cc-cd09-0410-ab3c-d52691b4dbfc