Fixed path to /etc/mailman/virtual-mailman file in CentOS Installer.

Till Brehm

2014-02-02 79bd207998f5fc19425ce60001e9dcaae159c1f1

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ALTER TABLE  `sys_session` CHANGE  `session_id`  `session_id` VARCHAR( 64 ) CHARACTER SET latin1 COLLATE latin1_swedish_ci NOT NULL;