Comment # 20 on bug 972787 from Jan Chren

`session-scriptlets.HOWTO` states:

```
Scriptlets should be delivered with packages containing
the services they start. They should not be shipped with
xdm.
```

`rpm -ql xdm` shows:

```
/etc/X11/xdm/scripts/10-gpg-agent
/etc/X11/xdm/scripts/11-ssh-agent
/etc/X11/xdm/scripts/20-dbus
/etc/X11/xdm/scripts/30-console-kit
```

Also, 'gpg-agent' is started by default and there's no documentation on how to
disable it (ie. writing a "master scriptlet", which sets `usegpg` variable to
string `no`).