Bug 73027 [Dialogs] Buttons are too high
I20040831 Buttons are no longer oval but have a rounded rectangle shape (see first screenshot). The second screenshot shows how buttons using the small system font should look like.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
*/
    private Point size = null;
    /**
     * Creates a new preference page with an empty title and no image.
     */
    protected PreferencePage() {
        this(""); 
    }
    /**
     * Creates a new preference page with the given title and no image.
     *
     * @param title the title of this preference page
     */
    protected PreferencePage(String title) {
        super(title);
    }
    /**
     * Creates a new abstract preference page with the given title and image.
     *
     * @param title the title of this preference page
     * @param image the image for this preference page,
     *  or <code>null</code> if none
     */
    protected PreferencePage(String title, ImageDescriptor image) {
        super(title, image);
    }
    /**
     * Computes the size for this page's UI control.
     * <p>
     * The default implementation of this <code>IPreferencePage</code>