CentOS 7.2 related fixes in installer and apache vhost template.

Till Brehm

2016-06-22 2b3dfac5e54e56fa05f98cb00d1df42110d6b896

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