[Mac] Multiple compositing/patterns test fail
        https://bugs.webkit.org/show_bug.cgi?id=118490

        * platform/mac/TestExpectations: The failures appear to be WK2 only in my testing,
        so moved the expectations to mac-wk2.

        * platform/mac-wk2/TestExpectations: Updated bug numbers.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@152470 268f45cc-cd09-0410-ab3c-d52691b4dbfc