Bug 144527 [Wizards] WizardDialog should have the maxmize button
RC6 Many of our wizards show up quite scrunched initially in High Contrast mode. When they are expanded the size is quite good. We should set the maximize flag so that we get a maximize button on the dialog shell.
bundles/org.eclipse.jface/src/org/eclipse/jface/wizard/WizardDialog.java
*   <code>Boolean</code>)
     * @param key the key
     * @param enabled <code>true</code> to enable the control, 
     *   and <code>false</code> to disable it
     * @see #restoreEnableState(Control, Map, String)
     */
    private void saveEnableStateAndSet(Control w, Map h, String key,
            boolean enabled) {
        if (w != null) {
            h.put(key, new Boolean(w.getEnabled()));
            w.setEnabled(enabled);
        }
    }
    /**
     * Captures and returns the enabled/disabled state of the wizard dialog's
     * buttons and the tree of controls for the currently showing page. All
     * these controls are disabled in the process, with the possible excepton of
     * the Cancel button.
     *
     * @param keepCancelEnabled <code>true</code> if the Cancel button should
     *   remain enabled, and <code>false</code> if it should be disabled
     * @return a map containing the saved state suitable for restoring later
     *   with <code>restoreUIState</code>
     * @see #restoreUIState
     */
    private Map saveUIState(boolean keepCancelEnabled) {
        Map savedState = new HashMap(10);
        saveEnableStateAndSet(backButton, savedState, "back", false); 
        saveEnableStateAndSet(nextButton, savedState, "next", false); 
        saveEnableStateAndSet(finishButton, savedState, "finish", false);