Warning at enabling module - Can't create tables

This is a mistake in the SQL request : The prefix mail_ which I set up at installing drupal is not considered in the reference of the foreign key.
It should be :

CREATE TABLE mail_mailserver_virtual_users ( id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY, domain_id INT(11) NOT NULL, user VARCHAR(40) NOT NULL, password VARCHAR(32) NOT NULL, CONSTRAINT UNIQUE_EMAIL UNIQUE (domain_id, user), FOREIGN KEY (domain_id) REFERENCES mail_mailserver_virtual_domains(id) ON DELETE CASCADE ) ENGINE = InnoDB

and

CREATE TABLE mail_mailserver_virtual_aliases ( id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY, domain_id INT(11) NOT NULL, source VARCHAR(40) NOT NULL, destination VARCHAR(80) NOT NULL, FOREIGN KEY (domain_id) REFERENCES mail_mailserver_virtual_domains(id) ON DELETE CASCADE ) ENGINE = InnoDB

The answer above doesn't fix the issue :

The system then expect to find the tables without the prefix mail_ when adding a domain.

This patch solves the problem of the non inserted prefix when referencing the table :

prefix_mailserver_virtual_domains

at creating the tables :

mail_mailserver_virtual_users and mail_mailserver_virtual_aliases.

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This is solving one issue, we have another one then when we want to add a domain.