Reviewed by Maciej and Richard.

	- fixed 3125497 -- REGRESSION: Infinite recursion with mouseUp: events

	The problem was that events could end up back at the same part due to the responder chain.

        * kwq/KWQKHTMLPart.h: Added mouseDown, mouseDragged, mouseUp, mouseMoved, buttonForCurrentEvent,
	and stateForCurrentEvent. Remove setCurrentEvent and currentEvent. Renamed handleMouseDownEventForWidget
	to passWidgetMouseDownEventToWidget. John and I had agreed to this name change before the last commit,
	but I forgot.

        * kwq/KWQKHTMLPart.mm:
        (KWQKHTMLPart::KWQKHTMLPart): Initialize _sendingEventToSubview to false. No need to initialize
	_mouseDownWasInSubframe at all since it's only looked at when _mouseDownView is non-nil.
        (KWQKHTMLPart::keyEvent): Save and restore _currentEvent instead of setting to nil.
	Use stateForCurrentEvent instead of stateForEvent:.
        (KWQKHTMLPart::khtmlMousePressEvent): Name change.
        (KWQKHTMLPart::khtmlMouseDoubleClickEvent): Name change.
        (KWQKHTMLPart::passWidgetMouseDownEventToWidget): Name change. Set _sendingEventToSubview when
        sending event to subview.
        (KWQKHTMLPart::khtmlMouseReleaseEvent): Name change. Set _sendingEventToSubview when sending
	event to subview.
        (KWQKHTMLPart::passSubframeEventToSubframe): Name change. Set _sendingEventToSubview when
	sending event to subview.
        (KWQKHTMLPart::buttonForCurrentEvent): Added. Similar to code I moved here from WebCoreBridge.
        (KWQKHTMLPart::stateForCurrentEvent): Added. Similar to code I moved here from WebCoreBridge.
        (KWQKHTMLPart::mouseDown): Added. Similar to code I moved here from WebCoreBridge, except returns
	and does nothing if _sendingEventToSubview is set.
        (KWQKHTMLPart::mouseDragged): Ditto.
        (KWQKHTMLPart::mouseUp): Ditto.
        (KWQKHTMLPart::mouseMoved): Added. Similar to code I moved here from WebCoreBridge.

        * kwq/WebCoreBridge.mm:
        (-[WebCoreBridge mouseDown:]): Just call _part->mouseDown().
        (-[WebCoreBridge mouseDragged:]): Just call _part->mouseDragged().
        (-[WebCoreBridge mouseUp:]): Just call _part->mouseUp().
        (-[WebCoreBridge mouseMoved:]): Just call _part->mouseMoved().

        * kwq/WebCoreBridgePrivate.h: Removed.
        * WebCore.pbproj/project.pbxproj: Removed WebCoreBridgePrivate.h.

WebKit:

        Reviewed by Maciej and Richard.

        - fixed reentrancy crash I ran into while debugging infinite recursion bugs

        * WebView.subproj/WebHTMLViewPrivate.m:
        (-[WebHTMLView _updateMouseoverWithFakeEvent]): Added. Does part of what _frameOrBoundsChanged did.
        (-[WebHTMLView _frameOrBoundsChanged]): Schedule the mouseover update to happen soon, rather than
        doing it right away. If we do it right away, we might reenter because sending a mouse moved event
        can result in another layout since mouse moved events are the same as mouse dragged events in KHTML.
        * WebView.subproj/WebHTMLView.m:
        (-[WebHTMLView viewWillMoveToWindow:]): Cancel the scheduled mouseover update.

        * WebKit.pbproj/project.pbxproj: Electron uber alles.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@3016 268f45cc-cd09-0410-ab3c-d52691b4dbfc