This is a minor maintenance task: CAccessibility.java appears to access the `AccessibleRole.key` field in two different ways.

In JavaAccessibilityUtilities we define the method `roleKey` as:

/*
 * Class: sun_lwawt_macosx_CAccessibility
 * Method: roleKey
 * Signature: (Ljavax/accessibility/AccessibleRole;)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_sun_lwawt_macosx_CAccessibility_roleKey
(JNIEnv *env, jclass clz, jobject axRole)
{
    DECLARE_CLASS_RETURN(sjc_AccessibleRole, "javax/accessibility/AccessibleRole", NULL);
    DECLARE_FIELD_RETURN(sjf_key, sjc_AccessibleRole, "key", "Ljava/lang/String;", NULL);
    return (*env)->GetObjectField(env, axRole, sjf_key);
}

And in AWTAccessor the `getAccessibleBundleAccessor` is defined as:

    static {
        AWTAccessor.setAccessibleBundleAccessor(
                new AWTAccessor.AccessibleBundleAccessor() {

                    @Override
                    public String getKey(AccessibleBundle accessibleBundle) {
                        return accessibleBundle.key;
                    }
                });
    }

These look redundant to me; I suggest one of them be removed.