mshtml: Call IDocHostUIHandler_HideUI and IDocHostUIHandler_ShowUI when changing an UI active window to be in edit mode.

Add tests for the behaviour of changing edit mode when a UI window is active.

Don't reset window_active in OleDocumentView_UIActivate.

mshtml: OleDocumentView_UIActivate should call IOleInPlaceUIWindow_SetActiveObject and IOleInPlaceFrame_SetBorderSpace.

Add a test to show this behaviour.
Don't call nsIWebBrowserFocus_Activate when just activating the window. 
Instead call it when UI-activating the window.

Vertex declarations are a d3d feature, thus they should be destroyed
before d3d is shut down in wined3d. The surface type should be reset
afterwards to prevent avoid gl surface afterwards and before a new
render target is created.

urlmon: If we are using an internal protocol ClassFactory, call its AddRef as the caller must Release the object.

Add more tests for specific arguments passed to IHttpNegotiate and IHttpNegotiate2. Note that
for OnResponse pszAdditionalHeaders is NULL when called directly from IInternetProtocol (for
example as seen in our protocol tests) but non-NULL when these interfaces are exposed by
IBindStatusCallback as seen here. Tests conform on Win98 and Winxp.

urlmon: Add a reference to the IUnknown for Release of STGMEDIUM to account for extra call to ReleaseBindInfo.