Reviewed by Eric Seidel.

        https://bugs.webkit.org/show_bug.cgi?id=25370
        Introduce ScriptEventListener to refactor away direct references to
        JSLazyEventListener in WebCore code.

        * GNUmakefile.am: Added ScriptEventListener to project.
        * WebCore.pro: Ditto.
        * WebCore.vcproj/WebCore.vcproj: Ditto.
        * WebCore.xcodeproj/project.pbxproj: Ditto.
        * bindings/js/JSDOMGlobalObject.cpp: Removed unused JSLazyEventListener include.
        * bindings/js/JSLazyEventListener.cpp: Moved createAttributeEventListener helpers
            to ScriptEventListener.
        * bindings/js/JSLazyEventListener.h: Ditto.
        * bindings/js/ScriptController.cpp: Removed unused JSLazyEventListener include.
        * bindings/js/ScriptEventListener.cpp: Added.
        * bindings/js/ScriptEventListener.h: Added.
        * bindings/v8/ScriptEventListener.cpp: Added.
        * bindings/v8/ScriptEventListener.h: Added.
        * dom/Document.cpp: Renamed JSLazyEventListener include to ScriptEventListener.
        * html/HTMLBodyElement.cpp: Ditto.
        * html/HTMLButtonElement.cpp: Ditto.
        * html/HTMLElement.cpp: Ditto.
        * html/HTMLFormElement.cpp: Ditto.
        * html/HTMLFrameElementBase.cpp: Ditto.
        * html/HTMLFrameSetElement.cpp: Ditto.
        * html/HTMLImageElement.cpp: Ditto.
        * html/HTMLInputElement.cpp: Ditto.
        * html/HTMLObjectElement.cpp: Ditto.
        * html/HTMLScriptElement.cpp: Ditto.
        * html/HTMLSelectElement.cpp: Ditto.
        * html/HTMLTextAreaElement.cpp: Ditto.
        * svg/SVGElement.cpp: Ditto.
        * svg/SVGSVGElement.cpp: Ditto.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@42843 268f45cc-cd09-0410-ab3c-d52691b4dbfc