/**
 * Execute WordPress role creation for the various WordPress versions.
 *
 * @since 2.0.0
 */
function populate_roles()
{
    populate_roles_160();
    populate_roles_210();
    populate_roles_230();
    populate_roles_250();
    populate_roles_260();
    populate_roles_270();
    populate_roles_280();
    populate_roles_300();
}

/**
 * Execute changes made in WordPress 2.8.
 *
 * @since 2.8.0
 */
function upgrade_280()
{
    global $wp_current_db_version;
    if ($wp_current_db_version < 10360) {
        populate_roles_280();
    }
    if ($wp_current_db_version < 11549) {
        $wpmu_sitewide_plugins = get_site_option('wpmu_sitewide_plugins');
        $active_sitewide_plugins = get_site_option('active_sitewide_plugins');
        if ($wpmu_sitewide_plugins) {
            if (!$active_sitewide_plugins) {
                $sitewide_plugins = (array) $wpmu_sitewide_plugins;
            } else {
                $sitewide_plugins = array_merge((array) $active_sitewide_plugins, (array) $wpmu_sitewide_plugins);
            }
            update_site_option('active_sitewide_plugins', $sitewide_plugins);
        }
        update_site_option('wpmu_sitewide_plugins', '');
        update_site_option('deactivated_sitewide_plugins', '');
    }
}

/**
 * Execute changes made in WordPress 2.8.
 *
 * @since 2.8.0
 */
function upgrade_280()
{
    global $wp_current_db_version, $wpdb;
    if ($wp_current_db_version < 10360) {
        populate_roles_280();
    }
    if (is_multisite()) {
        $start = 0;
        while ($rows = $wpdb->get_results("SELECT option_name, option_value FROM {$wpdb->options} ORDER BY option_id LIMIT {$start}, 20")) {
            foreach ($rows as $row) {
                $value = $row->option_value;
                if (!@unserialize($value)) {
                    $value = stripslashes($value);
                }
                if ($value !== $row->option_value) {
                    update_option($row->option_name, $value);
                }
            }
            $start += 20;
        }
        refresh_blog_details($wpdb->blogid);
    }
}

/**
 * Execute changes made in WordPress 2.8.
 *
 * @since 2.8.0
 */
function upgrade_280() {
	global $wp_current_db_version;

	if ( $wp_current_db_version < 10360 )
		populate_roles_280();
}