- eliminated the old Undefined(), Null(), Boolean(), Number(), and String()

        Code now uses jsUndefined(), jsNull(), jsBoolean(), jsNumber(), and jsString().

        * JSUtils.cpp:
        (JSObjectKJSValue):
        * UserObjectImp.cpp:
        (UserObjectImp::callAsFunction):
        (UserObjectImp::toPrimitive):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@12218 268f45cc-cd09-0410-ab3c-d52691b4dbfc