* The same mechanism (and the same PostInstallScript) is used for this.
* If a file first_login exists in ~/config/settings/boot, the first-login
scripts are launched, and the file removed.
* This fixes adding the deskbar tray icons even when there is no Deskbar
running yet (for example on first boot when the FirstBootPrompt
starts), or, IOW bug #12275.
* Now inherits from BServer, and gets its message port from the
launch_daemon.
* It registers an event "initial_volumes_mounted" that allows other
services to be started afterwards.
* This is now used in the boot launch files, and makes the scripting
based previous solution superfluous which has been removed with this
commit, too.
* This implements the last needed feature in order to reproduce the
complete former boot process using the launch_daemon.
* Scripts from targets are evaluated once on first target launch,
scripts from jobs are evaluated on each start.
* The "desktop" target now sources SetupEnvironment as usual.
* Allows to conditionally (or unconditionally) launch targets.
* Including tests for the settings parser.
* FirstBootPrompt is now launched when deemed necessary (as in
the Bootscript).
* Instead of launching Tracker/Deskbar directly, we now launch the
Login application.
* This will now start a new session for the selected user (the password
is currently ignored).
* When a user session is started, the launch_daemon forks, and the
child then restarts the LaunchDaemon application in user mode.
* It then registers itself with its parent, in order to resolve user
dependent services.
* Added a user launch file that will cause Tracker, and Deskbar to
start in the new session.
