move code for mail domain's owner change to plugin

Sergio Cambra

2014-07-04 6f4f7dbd37f50dc2bf0bdaf3d035806d4378bf0b

 install/sql/incremental/upd_0027.sql

New file
@@ -0,0 +1 @@
ALTER TABLE  `mail_user` ADD  `autoresponder_subject` VARCHAR(255) NOT NULL DEFAULT 'Out of office reply' AFTER  `autoresponder_end_date`;