Bug#1101703: rlogind immediately disconnects

[Christof Meerwald <cmeerw@cmeerw.org>]

Package: rsh-redone-server
Version: 85-4

With login 1:4.16.0-2+really2.40.4-5 in.rlogind immediately
disconnects as it can't handle the "vhangup" call used by login.

See also Bug#1078023, it seems that rlogind needs some special
handling to handle a read returning EIO; I have found this in the
telnetd source code:

 * In particular, EIO is known to appear when
 * reading off the master side, before having
 * an active slave side.


Note that rlogind works fine with earlier versions of login that don't
use vhangup.