add function to check the free space for a given directory

Florian Schaal

2014-03-11 6ff8d7bcb40c074e6b1b12c33d9478cdad0c6bd0

1
ALTER TABLE  `sys_session` CHANGE  `session_id`  `session_id` VARCHAR( 64 ) CHARACTER SET latin1 COLLATE latin1_swedish_ci NOT NULL;