Reviewed by Vicki.

    Reviewed by Vicki.

	<rdar://problem/4003774> REGRESSION(125-181): JavaScript problems @ Yankee/Dixie quiz

	Reworked how scopes are set up for event handlers to match other
	browser. This includes the following changes:

	- Special scope entries are set up at the time the event handler
	is created, not at the time it fires.

	- Special scope is only set up for event handlers set in the html
	source through an html attribute, not for handlers set using
	addEventHandler or setting JS properties like onclick through
	JavaScript.

	- Special scope is based on the DOM node on which the handler is
	an attribute, not the event target.

	This fixes the regression while allowing the fix to
	<rdar://problem/3798453> (DIG: getting variable with same name as
	DOM element attribute gets attribute value instead) to keep
	working correctly.

	* khtml/ecma/kjs_events.cpp:
        (JSEventListener::handleEvent):
        (JSLazyEventListener::JSLazyEventListener):
        (JSLazyEventListener::parseCode):
        * khtml/ecma/kjs_events.h:
        * khtml/ecma/kjs_proxy.cpp:
        (KJSProxyImpl::createHTMLEventHandler):
        * khtml/ecma/kjs_proxy.h:
        * khtml/ecma/kjs_window.cpp:
        (Window::getJSLazyEventListener):
        * khtml/ecma/kjs_window.h:
        * khtml/html/html_baseimpl.cpp:
        (HTMLBodyElementImpl::parseHTMLAttribute):
        (HTMLFrameElementImpl::parseHTMLAttribute):
        (HTMLFrameSetElementImpl::parseHTMLAttribute):
        * khtml/html/html_elementimpl.cpp:
        (HTMLElementImpl::parseHTMLAttribute):
        * khtml/html/html_formimpl.cpp:
        (DOM::HTMLFormElementImpl::parseHTMLAttribute):
        (DOM::HTMLButtonElementImpl::parseHTMLAttribute):
        (DOM::HTMLInputElementImpl::parseHTMLAttribute):
        (DOM::HTMLLabelElementImpl::parseHTMLAttribute):
        (DOM::HTMLSelectElementImpl::parseHTMLAttribute):
        (DOM::HTMLTextAreaElementImpl::parseHTMLAttribute):
        * khtml/html/html_imageimpl.cpp:
        (HTMLImageElementImpl::parseHTMLAttribute):
        * khtml/html/html_objectimpl.cpp:
        (HTMLObjectElementImpl::parseHTMLAttribute):
        * khtml/khtml_part.cpp:
        (KHTMLPart::createHTMLEventListener):
        * khtml/khtml_part.h:
        * khtml/xml/dom_docimpl.cpp:
        (DocumentImpl::createHTMLEventListener):
        * khtml/xml/dom_docimpl.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8731 268f45cc-cd09-0410-ab3c-d52691b4dbfc