Reviewed by Geoff Garen.

        Split JSLazyEventListener out into its own separate source file.
        We'll be removing JSAbstractEventListener and JSProtectedEventListener soon,
        so leave those in the same file with JSEventListener.

        * GNUmakefile.am: Added JSLazyEventListener.
        * WebCore.pro: Ditto.
        * WebCore.scons: Ditto.
        * WebCore.vcproj/WebCore.vcproj: Ditto.
        * WebCore.xcodeproj/project.pbxproj: Ditto.
        * WebCoreSources.bkl: Ditto.

        * bindings/js/JSEventListener.cpp: Removed the JSLazyEventListener part.
        Removed unneeded includes. Removed incorrect ASSERT_CLASS_FITS_IN_CELL, since
        JSAbstractEventListener is not derived from JSCell.

        * bindings/js/JSEventListener.h: Removed the JSLazyEventListener part
        and the now-unneeded include of PlatformString.h.

        * bindings/js/JSLazyEventListener.cpp: Copied from bindings/js/JSEventListener.cpp.
        Kept only the JSLazyEventListener part.
        (WebCore::eventParameterName): Made this have internal linkage by adding "static".
        Also moved the default case out of the switch statement so we will get a warning
        if we omit any cases in the future.

        * bindings/js/JSLazyEventListener.h: Copied from bindings/js/JSEventListener.h.
        Kept only the JSLazyEventListener part.

        * bindings/js/ScriptController.cpp: Removed unneeded includes and sorted the
        remanining ones. Include JSLazyEventListener.h instead of JSEventListener.h.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@42019 268f45cc-cd09-0410-ab3c-d52691b4dbfc