opendingux: GCW0: Disable root password in /etc/passwd
vsftpd: install sample config file to /etc

vsftpd comes with a sample config file that can serve as a starting
point for customization and enables a basic functionality.

[Peter: drop /usr/share/empty creation]
Signed-off-by: Stephan Hoffmann <sho@relinux.de>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
vsftpd: add empty directory /usr/share/empty

Vsftpd needs an empty directory where it can chroot.
If /usr/share/empty isn't present it refuses to work in the default
configuration.

Signed-off-by: Stephan Hoffmann <sho@relinux.de>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
opendingux: GCW0: Require password for telnet login
vsftpd: Add config option to not install init script

This is useful when starting vsftpd from xinetd instead.
opendingux: GCW0: Add configuration for vsftpd

The busybox ftpd only supports anonymous access.
opendingux: GCW0: defconfig: Enabled vsftpd
opendingux: busybox: Don't build programs we replaced

We replaced inetd by xinetd, ftpd by vsftpd and mdev by udev.