security: do not keep sensitive information too long in memory
Issue generated from Tuleap's migration script. Originally submitted by: Guillaume Roguez (guillaume)
Sensitive information, like passwords, must not be kept in the computer memory more than neccessary.
Ring Development Note: The GNU evaluation team has discovered such issue in the GNOME client, but this ticket tracks the issue as a project issue. Tasks could be used to tracks per-components changes.