-fixed http://bugzilla.opendarwin.org/show_bug.cgi?id=4008

    -fixed bugzilla.opendarwin.org/show_bug.cgi?id=4008
        Error objects report incorrect length

        Reviewed by darin.

        * kjs/error_object.cpp: Error objects now include a length property
        (ErrorObjectImp::ErrorObjectImp):

        * tests/mozilla/expected.html: updated expected results to reflect fix
        * tests/mozilla/js1_5/Exceptions/regress-123002.js: test now expects
        ecma compliant results

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@9819 268f45cc-cd09-0410-ab3c-d52691b4dbfc