XURL_ICONS has now it's own template. So copy file social_xurl_template.php to social folder under theme templates.
Example of using:
$SOCIAL_XURL_TEMPLATE['default']['start'] = '<div class="social-icons">';
$SOCIAL_XURL_TEMPLATE['default']['item'] = '<a class="icon icon-{XURL_ICONS_ID}" href="{XURL_ICONS_HREF}"></a>';
$SOCIAL_XURL_TEMPLATE['default']['end'] = '</div>';
$SOCIAL_XURL_TEMPLATE['footer']['start'] = '<ul class="social-icons list-soc">';
$SOCIAL_XURL_TEMPLATE['footer']['item'] = '<li><a class="icon-{XURL_ICONS_ID}" href="{XURL_ICONS_HREF}"></a></li>';
$SOCIAL_XURL_TEMPLATE['footer']['end'] = '</ul>';
in theme.php
{XURL_ICONS: template=default}
{XURL_ICONS: template=footer}
it's all.
