Fixed several bugs (revisions 1772-1779 from stable branch).

install/dist/conf/opensuse112.conf.php

install/dist/lib/opensuse.lib.php

install/dist/lib/opensuse112.lib.php

install/lib/install.lib.php

install/tpl/mysql-virtual_domains.cf.master

install/tpl/mysql-virtual_email2email.cf.master

install/tpl/mysql-virtual_forwardings.cf.master

install/tpl/mysql-virtual_mailboxes.cf.master

install/tpl/mysql-virtual_recipient.cf.master

install/tpl/mysql-virtual_relaydomains.cf.master

install/tpl/mysql-virtual_relayrecipientmaps.cf.master

install/tpl/mysql-virtual_sender.cf.master

install/tpl/mysql-virtual_transports.cf.master

interface/lib/classes/tform.inc.php

interface/lib/lang/en.lng

interface/web/admin/language_edit.php

interface/web/mail/lib/lang/en_mail_user.lng

...rface/web/mail/templates/mail_user_autoresponder_edit.htm

interface/web/sites/form/web_aliasdomain.tform.php

interface/web/sites/form/web_domain.tform.php