add a '--' option before the user name, to avoid rlogin -l '-froot'
use execle to pass the fabricated environment, quit whacking 'environ'
From: Charles Hannum <mycroft@NetBSD.ORG>

4.4BSD snapshot (revision 8.1)

4.4BSD snapshot (revision 8.1); add 1993 to copyright

don't write out the trailing NULL

iruserok() calls __icheckhost which now calls gethostbyname which
overwrites our hostname

lint fix to signals

use iruserok, not ruserok, minor ANSI cleanups

delete data-stream encryption for the foreign sites (Network, Release 2)

it's really 666, not whatever the default is

lost redist include line somewhere along the way

macro and text revision (-mdoc version 3)

ANSI

delete data-stream encryption for the foreign sites (4.3-Reno)

delete data-stream encryption for the foreign sites (4.3-Reno)

use ifdefs that unifdef understands

break out -x (encrypted sessions) with #ifdef CRYPT

use pty library

set IP type of service; minor kerberos touchups

new copyright notice

add ROOT login syslog message

TCSADFLUSH -> TCSAFLUSH

add FD_ZERO of ebits

new copyright notice

don't allow root login on unsecure terminal

string.h is ANSI C include file