Updated several base libraries and added advanced search functionality.

config/exim4/exim4_without_amavisd.conf.template

interface/lib/classes/datasources_enbion.inc.php

interface/lib/classes/db_mysql.inc.php

interface/lib/classes/listform.inc.php

interface/lib/classes/listform_actions.inc.php

interface/lib/classes/listform_tpl_generator.inc.php

interface/lib/classes/plugin_base.inc.php

interface/lib/classes/plugin_dbhistory.inc.php

interface/lib/classes/plugin_listview.inc.php

interface/lib/classes/searchform.inc.php

interface/lib/classes/searchform_actions.inc.php

interface/lib/classes/searchform_tpl_generator.inc.php

interface/lib/classes/tform.inc.php

interface/lib/classes/tform_actions.inc.php

interface/lib/classes/tform_tpl_generator.inc.php