table. users.password column was not updated by upgrade script. To fix
this bug, a new upgrade script from 1.5.0 was added even if database model
did not change, it's just about fixing upgraded database.
git-svn-id: http://piwigo.org/svn/branches/branch-1_5@974 68402e56-0260-453c-a942-63ccdbb3a9ee