- fix some license mistakes

        * LICENSE-APPLE: Added more years of publication to the copyright here.

        * html/CanvasGradient.idl: Corrected license on this file. It had the wrong one.
        * html/CanvasPattern.idl: Ditto.
        * html/CanvasRenderingContext2D.idl: Ditto.
        * html/HTMLCanvasElement.idl: Ditto.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15215 268f45cc-cd09-0410-ab3c-d52691b4dbfc