Make the last remaining pieces of the FrameLoader platform 
        independent. Move most of the code over to WebFrameLoaderClient.
        Some smaller cleanups in the WebFrameBridge, and moved some
        platform independent functionality over to the shared code
        in WebCore.

        Add support for Frames to the Qt build and fix some issues
        in the API classes.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@19042 268f45cc-cd09-0410-ab3c-d52691b4dbfc